import sys
input = sys.stdin.buffer.readline

def main():

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

    import math
    def segfunc(x, y):
        return math.gcd(x, y)

    def init(init_val):
        # set_val
        for i in range(n):
            seg[i+num-1] = init_val[i]
        # built
        for i in range(num-2, -1, -1):
            seg[i] = segfunc(seg[2*i+1], seg[2*i+2])

    def update(k, x):
        k += num - 1
        seg[k] = x
        while k:
            k = (k-1)//2
            seg[k] = segfunc(seg[2*k+1], seg[2*k+2])

    def query(p, q):
        if q <= p:
            return ide_ele
        p += num - 1
        q += num - 2
        res = ide_ele
        while q-p>1:
            if p&1 == 0:
                res = segfunc(res, seg[p])
            if q&1 == 1:
                res = segfunc(res, seg[q])
                q -= 1
            p = p//2
            q = (q-1)//2
        if p == q:
            res = segfunc(res, seg[p])
        else:
            res = segfunc(segfunc(res, seg[p]), seg[q])
        return res

    # identity element
    ide_ele = 0

    # num: n以上の最小の2のべき乗
    num = 2**(n-1).bit_length()
    seg = [ide_ele]*2*num

    init(A)

    q = 0
    ans = 0
    for p in range(n):
        g =  query(p, q+1)
        while q < n and math.gcd(g, A[q]) != 1:
            q += 1
        ans += n-1-q+1
        if p == q:
            q += 1
    print(ans)

if __name__ == '__main__':
    main()