#include<bits/stdc++.h>
using namespace std;
using ll = long long;
int main(){
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    int t ;
    cin>>t;
    while(t--){
        ll x,a;
        cin>>x>>a;
        ll ans = 1e15;
        for(int i = 1;i<=a;i++){
            ll now = x * i;
            ll need = a / i;
            ll tmp = a % i;
            now += need * need * (i-tmp);
            now += (need+1)*(need+1) * tmp;
            ans = min(ans,now);
        }
        cout<<ans<<endl;

    }
}