from math import gcd
import sys
readline = sys.stdin.readline


def push(a, x):
    a.append((x, gcd(x, a[-1][1])))


def pop(front, back):
    if len(back) == 1:
        for _ in range(len(front)-1):
            back.append(gcd(front.pop()[0], back[-1]))
    back.pop()


def fold(front, back):
    return gcd(front[-1][1], back[-1])


N = int(input())
a = list(map(int, input().split()))

r = 0
ans = 0
front, back = [(0, 0)], [0]

for l in range(N):
    while r < N and gcd(fold(front, back), a[r]) != 1:
        push(front, a[r])
        r += 1

    ans += N - r

    if l < r:
        pop(front, back)
    else:
        r += 1

print(ans)