/* -*- coding: utf-8 -*-
 *
 * 2078.cc:  No.2078 魔抜けなパープル - yukicoder
 */

#include<cstdio>
#include<algorithm>
 
using namespace std;

/* constant */

const long long LINF = 1LL << 62;

/* typedef */

typedef long long ll;

/* global variables */

/* subroutines */

inline ll mp(int k, int x) { return (ll)k * k + x; }

ll check(int a, int x, int c) {
  int k = a / c, r = a % c;
  return mp(k, x) * (c - r) + mp(k + 1, x) * r;
}

/* main */

int main() {
  int tn;
  scanf("%d", &tn);

  while (tn--) {
    int x, a;
    scanf("%d%d", &x, &a);

    ll minp = LINF;
    for (int c = 1; c <= a; c++)
      minp = min(minp, check(a, x, c));

    printf("%lld\n", minp);
  }
  return 0;
}