import sys
def main():
    input = sys.stdin.readline
    def make_divisors(n):
        lower_divisors , upper_divisors = [], []
        i = 1
        while i*i <= n:
            if n % i == 0:
                lower_divisors.append(i)
                if i != n // i:
                    upper_divisors.append(n//i)
            i += 1
        return lower_divisors + upper_divisors[::-1]
    Q = int(input())
    for _ in range(Q):
        x, y = map(int, input().split())
        if x == y:
            print(len(make_divisors(x)) + x - 3 + x % 2)
            continue
        ans = 0
        m = abs(x - y)
        mi = min(x, y)
        for i in make_divisors(m):
            n = m // i + 1
            ans += i < mi and not (mi - i) % (n + 1)
        print(ans)
if __name__ == "__main__":
    main()