from math import gcd
n = int(input())
X = list(map(int, input().split()))
st_f = [(0, 0)]
st_b = [(0, 0)]
r = 0
j = 0
for i in range(n):
    while j<n:
        st_f.append(
                (X[j], gcd(st_f[-1][1], X[j]))
                )
        j += 1
        if gcd(st_f[-1][1], st_b[-1][1]) == 1:
            break
    if j == n and gcd(st_f[-1][1], st_b[-1][1]) != 1:
        j += 1
    if len(st_b) == 1:
        while len(st_f) > 1:
            x, y = st_f.pop()
            st_b.append(
                    (x, gcd(st_b[-1][1], x))
                    )
    st_b.pop()
#    print(i, j)
    r += n+1-j
print(r)