#include <iostream>
using namespace std;
typedef long long ll;

const ll INF = 1000000000000000000;

int main()
{
    int t;
    cin >> t;
    while (t--)
    {
        ll x, a;
        cin >> x >> a;
        ll ans = INF;
        for (int i = 1; i <= a; i++)
        {
            ans = min(ans, a % i * (a / i + 1) * (a / i + 1) + (i - a % i) * (a / i) * (a / i) + x * i);
        }
        cout << ans << endl;
    }
}