import java.util.*;
import java.util.stream.*;

public class Main {
    static Scanner scan;
    public static void test(int t) {
        int res = 0;
        int x = scan.nextInt(); //clumsines
        int a = scan.nextInt(); //monster hp
        long mmp = -1;
        for (int n = 1; n < a + 1; n++) {
            int mS = a / n;
            int nMS = a % n; // nMS * (mS + 1) + (n - nMS) * mS = a
            // calc mp
            long mp = ((long)n - nMS) * ((long)mS * mS + x) + (long)nMS * ((long)(mS+1)*(mS+1) + x);
            if ((mmp == -1) || (mmp > mp)) {
                mmp = mp;
            }
        }
        System.out.println(mmp);
    }
    public static void main(String []args) {
        scan = new Scanner(System.in);
        int t = scan.nextInt();
        IntStream.range(0,t).forEach(Main::test);
    }
}