mod = 1000000007
eps = 10**-9


def main():
    import sys
    from collections import defaultdict
    input = sys.stdin.readline

    def gcd(a, b):
        while a%b:
            a, b = b, a%b
        return b

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

    G = defaultdict(int)
    for a in A:
        tmp = []
        for v in G:
            tmp.append((gcd(v, a), G[v]))
        for x, y in tmp:
            G[x] += y
        G[a] += 1
    print(G[1])


if __name__ == '__main__':
    main()