using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static string[] SList(int n) => Enumerable.Repeat(0, n).Select(_ => ReadLine()).ToArray();
    static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var t = NN;
        var res = new long[t];
        for (var u = 0; u < t; ++u)
        {
            var c = NList;
            var (x, a) = (c[0], c[1]);
            res[u] = long.MaxValue;
            for (var i = 1; i <= a; ++i)
            {
                var dmg = a / i;
                var plus1 = a % i;
                var sub = ((long)dmg * dmg + x) * (i - plus1) + ((long)(dmg + 1) * (dmg + 1) + x) * plus1;
                res[u] = Math.Min(res[u], sub);
            }
        }
        WriteLine(string.Join("\n", res));
    }
    
}