#include <bits/stdc++.h>
#define N 501
#define ll long long
#define f first
#define s second
using namespace std;
ifstream in("indep.in");
ofstream out("indep.out");
int a[N*2+1];
int gcd(int a,int b){
    if(!a || !b)
        return a+b;
    if(a>b)
        return gcd(a%b,b);
    return gcd(a,b%a);
}
int main(){
    int i,n,x;
    in>>n;
    while(n--){
        cin>>x;
        for(i=1; i<=N*2; ++i)
            if(a[i])
                a[gcd(x,i)]+=a[i];
        ++a[x];
    }
    out<<a[1];
    return 0;
}