#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pll = pair<ll, ll>;
#define drep(i, cc, n) for (ll i = (cc); i <= (n); ++i)
#define rep(i, n) drep(i, 0, n - 1)
#define all(a) (a).begin(), (a).end()
#define pb push_back
#define fi first
#define se second

const ll MOD = 1000000007;
const ll MOD2 = 998244353;
const ll INF = 1LL << 60;
const ll MAX_N = 2e5;

ll solve(){
    ll x, a;
    cin >> x >> a;

    ll ans = INF;
    for(ll i=1; i<=a; i++){
        ll y = a/i;
        ll r = a - (i-1)*y;
        ll small = i;
        ll large = 0;

        if(y+1 == r){
            small--;
            large++;
        }else if(y+1 < r){
            small = i-1;
            large = 1;
            small -= (r - (y+1));
            large += (r - (y+1));
        }

        ll sa = x*i;
        sa += small * y * y;
        sa += large * (y+1)*(y+1);
        ans = min(ans, sa);
    }

    return ans;
}

int main(){
    ll t;
    cin >> t;

    vector<ll> ans(t);
    rep(i, t) ans[i] = solve();
    rep(i, t) cout << ans[i] << endl;
}