mod = 998244353


def main():
    import sys
    input = sys.stdin.readline

    for _ in range(int(input())):
        x, a = map(int, input().split())
        
        ans = float("inf")
        for i in range(1, a+1):
            b = a // i
            n1 = a % i
            n0 = i - n1
            ans = min(ans, (x + b ** 2) * n0 + (x + (b+1) ** 2) * n1)
        print(ans)


if __name__ == '__main__':
    main()