#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <atcoder/modint>
using namespace std;
using i32 = int;
using u32 = unsigned int;
using i64 = long long;
using u64 = unsigned long long;
#define rep(i,n) for(int i=0; i<(int)(n); i++)
const i64 INF = 1001001001001001001;

using Modint = atcoder::static_modint<998244353>;


int main(){
    int T; cin >> T;
    vector<i64> N(T); rep(t,T) cin >> N[t];
    i64 maxN = *max_element(N.begin(), N.end());
    vector<i64> A(maxN+1, 1);
    A[0] = A[1] = 0;
    for(i64 p=2; p<=maxN; p++) if(p == 2 || (p % 2 != 0 && A[p] == 1)){
        for(i64 q=p; q<=maxN; q+=p) A[q] *= p-1;
        for(i64 pp=p*p; pp<=maxN; pp*=p) for(i64 q=pp; q<=maxN; q+=pp) A[q] *= p;
    }
    rep(i,maxN) A[i+1] += A[i];
    for(i64 n : N) cout << (n*(n-1) - A[n]) << '\n';
    return 0;
}



struct ios_do_not_sync{
    ios_do_not_sync(){
        ios::sync_with_stdio(false);
        cin.tie(nullptr);
    }
} ios_do_not_sync_instance;