import sys

# sys.setrecursionlimit(200005)
int1 = lambda x: int(x)-1
pDB = lambda *x: print(*x, end="\n", file=sys.stderr)
p2D = lambda x: print(*x, sep="\n", end="\n\n", file=sys.stderr)
def II(): return int(sys.stdin.readline())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]
def LI1(): return list(map(int1, sys.stdin.readline().split()))
def LLI1(rows_number): return [LI1() for _ in range(rows_number)]
def SI(): return sys.stdin.readline().rstrip()
dij = [(0, 1), (-1, 0), (0, -1), (1, 0)]
# dij = [(0, 1), (-1, 0), (0, -1), (1, 0), (1, 1), (1, -1), (-1, 1), (-1, -1)]
# inf = (1 << 63)-1
inf = (1 << 31)-1
md = 10**9+7
# md = 998244353

class SparseTable:
    def __init__(self, op, e, aa):
        self.op = op
        w = len(aa)
        h = w.bit_length()
        table = [aa]+[[e() for _ in range(w)] for _ in range(h-1)]
        tablei1 = table[0]
        for i in range(1, h):
            tablei = table[i]
            for j in range(w-(1 << i)+1):
                rj = j+(1 << (i-1))
                tablei[j] = op(tablei1[j], tablei1[rj])
            tablei1 = tablei
        self.table = table

    # [l,r)の取得
    def prod(self, l, r):
        i = (r-l).bit_length()-1
        tablei = self.table[i]
        return self.op(tablei[l], tablei[r-(1 << i)])

from math import gcd

def binary_search(l, r, ok, minimize):
    if minimize: l -= 1
    else: r += 1
    while l+1 < r:
        m = (l+r)//2
        if ok(m) ^ minimize: l = m
        else: r = m
    if minimize: return r
    return l

def ok(m):
    return sp.prod(m, i+1) > 1

n = II()
aa = LI()

sp = SparseTable(gcd, int, aa)

ans = 0
for i in range(n):
    j = binary_search(0, i+1, ok, True)
    ans += j

print(ans)