#include <iostream>
#include <fstream>
using namespace std;
ifstream f("sum.in");
ofstream g("sum.out");
int cmmdc(int a, int b)
{
if(b)return cmmdc(b,a%b);
    else
    return a;
}
int main()
{
int a,p,i,n;
f>>n;
for(int j=1;j<=n;j++){
        f>>a;
        p=0;
for(i=2;i<=2*a;i++){
        if (cmmdc(a,i)==1)p++;
}
g<<p;
}
return 0;
}