#RMQ用のSparseTableを作成
import math
import fractions
def make_SparseTable(lis):

    spt_len = 0
    while spt_len ** 2 < len(lis):
        spt_len += 1

    N = len(lis)
    ret = [[float("inf")] * spt_len for i in range(N)]

    for i in range(N):
        ret[i][0] = lis[i]
    
    for j in range(spt_len-1):
        j += 1

        for i in range(N):

            if i + 2**(j-1) < N:
                ret[i][j] = fractions.gcd(ret[i][j-1] , ret[i+2**(j-1)][j-1])
            else:
                ret[i][j] = ret[i][j-1]

    return ret

#[a,b]の最小値を求める
def RMQ_SPT(a,b,spt):

    if a == 0 and b == N-1:
        return al

    qlen = b-a+1
    ind = int(math.log(qlen,2))

    return fractions.gcd(spt[a][ind] , spt[b-2**ind+1][ind])

N = int(input())

A = list(map(int,input().split()))

al = A[0]
for i in A:
    al = fractions.gcd(i,al)
    

spt = make_SparseTable(A)

l = 0

ans = N*(N-1)//2 + N

for r in range(N):

    if A[r] == 1:
        continue

    while RMQ_SPT(l,r,spt) == 1:
        l += 1

    ans -= r-l+1

print (ans)