#include <stdio.h>

void chmin(long long* a, long long b)
{
	if (*a > b) *a = b;
}

long long solve(int X, int A)
{
	int k;
	long long ans = 1LL << 60, tmp;
	for (k = 1; k <= A; k++) {
		tmp = (long long)X * k + (long long)(A / k) * (A / k) * (k - A % k) + (long long)(A / k + 1) * (A / k + 1) * (A % k);
		chmin(&ans, tmp);
	}
	return ans;
}

int main()
{
	int T, X, A;
	scanf("%d", &T);
	while (T--) {
		scanf("%d %d", &X, &A);
		printf("%lld\n", solve(X, A));
	}
	fflush(stdout);
	return 0;
}