#include <iostream>
#include <fstream>
using namespace std;

ifstream in("sum.in");
ofstream out("sum.out");

const int NMAX = 1000000;
long long phi[NMAX + 5];
int n = 0, x = 0, i, j;

int main()
{
	for (i = 1; i <= NMAX; ++i) {
		phi[i] = i - 1;
	}
	for (i = 2; i <= NMAX; ++i) {
		for (j = 2 * i; j <= NMAX; j += i) {
			phi[j] -= phi[i];
		}
	}
    in >> n;
    for(i = 1; i <= n; i++) {
        in >> x;
        out << x * phi[x] * 2 << endl;
    }
	return 0;
}