from math import gcd
n=int(input())
a=[int(input()) for _ in range(n)]
ans=0
buf=0
for i in range(n-2):
    for j in range(i+1,n-1):
        buf=gcd(a[i],a[j])
        for k in range(j+1,n):
            if gcd(buf,a[k])==1:ans+=1
print(ans)