#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); i++)
using namespace std;
typedef long long ll;

int main(){
    cin.tie(0);
    ios::sync_with_stdio(0);
    
    int T; cin >> T;
    rep(_,T) {
        ll X,A; cin >> X >> A;
        ll ans = 8e18;
        for(ll i = 1; i <= A; i++) {
            ll FLOOR = A / i;
            ll CEIL = A / i + 1;
            ll FLOOR_CNT = i - A % i;
            ll CEIL_CNT = A % i;

            ll COST = 0;
            COST += FLOOR * FLOOR * FLOOR_CNT;
            COST += CEIL  * CEIL  * CEIL_CNT;
            COST += X * (FLOOR_CNT + CEIL_CNT);
            assert(FLOOR * FLOOR_CNT + CEIL * CEIL_CNT == A);
            
            ans = min(ans, COST);
        }
        cout << ans << "\n";
    }
}