#include <stdio.h>
#include <atcoder/all>
#include <bits/stdc++.h>
using namespace std;
using namespace atcoder;
using mint = modint998244353;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf32 1000000001
#define Inf64 4000000000000000001



int main(){
	
	int _t;
	cin>>_t;
	
	rep(_,_t){
		long long X,A;
		cin>>X>>A;
		long long ans = Inf64;
		for(long long i=1;i<=A;i++){
			long long cur = i * X;
			long long sa = A/i;
			long long sb = sa+1;
			long long cb = A%i;
			long long ca = i-cb;
			cur += sa*sa * ca;
			cur += sb*sb * cb;
			ans = min(ans,cur);
		}
		cout<<ans<<endl;
		
	}
	
	return 0;
}