def divisors(M):#Mの約数列 O(n^(0.5+e))
    d=[]
    i=1
    while M>=i**2:
        if M%i==0:
            d.append(i)
            if i**2!=M:
                d.append(M//i)
        i=i+1
    return d

import sys

input= sys.stdin.readline

for _ in range(int(input())):
    x,y = map(int,input().split())
    div = divisors(x+y)
    count = 0
    for d in div:
        count+=1
        

    print(count)