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