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())
    div = make_divisors(x)
    if x == y:
        print(len(div) + x - 3 + x % 2)
        continue
    ans = 0
    m = abs(x - y)
    div2 = make_divisors(m)
    for i in div2:
        ans += 1 if i < y and (y - i) % (m // i + 2) == 0 else 0
    print(ans)