package main

import (
	"bufio"
	"fmt"
	stdio "io"
	"os"
	"strconv"
)

// from https://atcoder.jp/users/ccppjsrb
var io *Iost

type Iost struct {
	Scanner *bufio.Scanner
	Writer  *bufio.Writer
}

func NewIost(fp stdio.Reader, wfp stdio.Writer) *Iost {
	const BufSize = 2000005
	scanner := bufio.NewScanner(fp)
	scanner.Split(bufio.ScanWords)
	scanner.Buffer(make([]byte, BufSize), BufSize)
	return &Iost{Scanner: scanner, Writer: bufio.NewWriter(wfp)}
}
func (io *Iost) Text() string {
	if !io.Scanner.Scan() {
		panic("scan failed")
	}
	return io.Scanner.Text()
}
func (io *Iost) Atoi(s string) int                 { x, _ := strconv.Atoi(s); return x }
func (io *Iost) Atoi64(s string) int64             { x, _ := strconv.ParseInt(s, 10, 64); return x }
func (io *Iost) Atof64(s string) float64           { x, _ := strconv.ParseFloat(s, 64); return x }
func (io *Iost) NextInt() int                      { return io.Atoi(io.Text()) }
func (io *Iost) NextInt64() int64                  { return io.Atoi64(io.Text()) }
func (io *Iost) NextFloat64() float64              { return io.Atof64(io.Text()) }
func (io *Iost) Print(x ...interface{})            { fmt.Fprint(io.Writer, x...) }
func (io *Iost) Printf(s string, x ...interface{}) { fmt.Fprintf(io.Writer, s, x...) }
func (io *Iost) Println(x ...interface{})          { fmt.Fprintln(io.Writer, x...) }

func main() {
	in := os.Stdin
	out := os.Stdout
	io = NewIost(in, out)
	defer func() {
		io.Writer.Flush()
	}()

	n := io.NextInt()
	nums := make([]E, n)
	for i := 0; i < n; i++ {
		nums[i] = io.NextInt()
	}
	io.Println(solve(nums))

}

func solve(nums []int) int {
	n := len(nums)
	res := 0
	seg := NewSegmentTree(nums)
	for left := 0; left < n; left++ {
		right := seg.MaxRight(left, func(x int) bool {
			return x != 1
		})
		res += n - right
	}
	return res
}

type E = int

func (*SegmentTree) e() E { return 0 }
func (*SegmentTree) op(a, b E) E {
	for b != 0 {
		a, b = b, a%b
	}
	return a
}
func min(a, b int) int {
	if a < b {
		return a
	}
	return b
}
func max(a, b int) int {
	if a > b {
		return a
	}
	return b
}

type SegmentTree struct {
	n, size int
	seg     []E
}

func NewSegmentTree(leaves []E) *SegmentTree {
	res := &SegmentTree{}
	n := len(leaves)
	size := 1
	for size < n {
		size <<= 1
	}
	seg := make([]E, size<<1)
	for i := 0; i < n; i++ {
		seg[i+size] = leaves[i]
	}
	for i := size - 1; i > 0; i-- {
		seg[i] = res.op(seg[i<<1], seg[i<<1|1])
	}
	res.n = n
	res.size = size
	res.seg = seg
	return res
}
func (st *SegmentTree) Get(index int) E {
	if index < 0 || index >= st.n {
		return st.e()
	}
	return st.seg[index+st.size]
}
func (st *SegmentTree) Set(index int, value E) {
	if index < 0 || index >= st.n {
		return
	}
	index += st.size
	st.seg[index] = value
	for index >>= 1; index > 0; index >>= 1 {
		st.seg[index] = st.op(st.seg[index<<1], st.seg[index<<1|1])
	}
}

// [start, end)
func (st *SegmentTree) Query(start, end int) E {
	if start < 0 {
		start = 0
	}
	if end > st.n {
		end = st.n
	}
	if start >= end {
		return st.e()
	}
	leftRes, rightRes := st.e(), st.e()
	start += st.size
	end += st.size
	for start < end {
		if start&1 == 1 {
			leftRes = st.op(leftRes, st.seg[start])
			start++
		}
		if end&1 == 1 {
			end--
			rightRes = st.op(st.seg[end], rightRes)
		}
		start >>= 1
		end >>= 1
	}
	return st.op(leftRes, rightRes)
}
func (st *SegmentTree) QueryAll() E { return st.seg[1] }

// 二分查询最大的 right 使得切片 [left:right] 内的值满足 predicate
func (st *SegmentTree) MaxRight(left int, predicate func(E) bool) int {
	if left == st.n {
		return st.n
	}
	left += st.size
	res := st.e()
	for {
		for left&1 == 0 {
			left >>= 1
		}
		if !predicate(st.op(res, st.seg[left])) {
			for left < st.size {
				left <<= 1
				if predicate(st.op(res, st.seg[left])) {
					res = st.op(res, st.seg[left])
					left++
				}
			}
			return left - st.size
		}
		res = st.op(res, st.seg[left])
		left++
		if (left & -left) == left {
			break
		}
	}
	return st.n
}

// 二分查询最小的 left 使得切片 [left:right] 内的值满足 predicate
func (st *SegmentTree) MinLeft(right int, predicate func(E) bool) int {
	if right == 0 {
		return 0
	}
	right += st.size
	res := st.e()
	for {
		right--
		for right > 1 && right&1 == 1 {
			right >>= 1
		}
		if !predicate(st.op(st.seg[right], res)) {
			for right < st.size {
				right = right<<1 | 1
				if predicate(st.op(st.seg[right], res)) {
					res = st.op(st.seg[right], res)
					right--
				}
			}
			return right + 1 - st.size
		}
		res = st.op(st.seg[right], res)
		if right&-right == right {
			break
		}
	}
	return 0
}