#include <bits/stdc++.h>
using namespace std;

int main() {
    int t;
    cin >> t;
    while(t--) {
        int X,A;
        cin >> X >> A;
        long long ans = 1001001001001001001;
        for(int i = 1; i <= A; i++) {
            long long now = 1ll*i*X;
            now += 1ll*(A/i)*(A/i)*(i-A%i);
            now += 1ll*(A/i+1)*(A/i+1)*(A%i);
            ans = min(ans,now);
        }
        cout << ans << endl;
    }
}