import sys
input = lambda : sys.stdin.readline().rstrip()

sys.setrecursionlimit(2*10**5+10)
write = lambda x: sys.stdout.write(x+"\n")
debug = lambda x: sys.stderr.write(x+"\n")
writef = lambda x: print("{:.12f}".format(x))


n = int(input())
a = list(map(int, input().split()))
d = {0:1}
from math import gcd
for i in range(n):
    v = a[i]
    nd = dict(d)
    for k,val in d.items():
        nk = gcd(k, v)
        nd.setdefault(nk, 0)
        nd[nk] += val
    d = nd
ans = d.get(1,0)
print(ans)