def divisor(x):
    ans = []
    for i in range(1, int(x**0.5) + 1):
        if x % i == 0:
            ans.append(i)
            if i * i != x:
                ans.append(x / i)
    return ans

s = int(input())
assert(1 <= s <= 10000)
for _ in range(s):
    x, y = map(int, input().split())
    assert(1 <= x <= 500000000)
    assert(1 <= y <= 500000000)
    if x == y:
        print(len(divisor(x)) + x + x % 2 - 3)
        continue
    ans = 0
    if x < y:
        x, y = y, x
    n = x - y
    for d in divisor(n):
        a = n // d + 1
        ans += y > d and not (y - d) % (a + 1)
    print(ans)