def f(A):
    C=defaultdict(int)
    for pp in product((0,1),repeat=len(A)):
        tmp=0
        for i,p in enumerate(pp):
            if p==1:
                if tmp==-1:
                    tmp=A[i]
                else:
                    tmp=gcd(tmp,A[i])
        C[tmp]+=1
    return C

from itertools import product
from math import gcd
from collections import defaultdict

N=int(input())
A=list(map(int, input().split()))
C1=f(A[:N//2])
C2=f(A[N//2:])


res=0
for key1,val1 in C1.items():
    for key2,val2 in C2.items():
        if gcd(key1,key2)==1:
            res+=val1*val2

print(res)