from itertools import product, groupby

def fast_prime_factorization_many(lst):
    # 素因数分解（ロー法、複数）
    from subprocess import Popen, PIPE
    res = Popen(["factor"] + list(map(str, lst)), stdout=PIPE).communicate()[0].split(b"\n")[:-1]
    return [list(map(int, r.split()[1:])) for r in res]

def main():
    S = int(input())
    XY = [list(map(int, input().split())) for _ in range(S)]
    Factors = fast_prime_factorization_many([x+y for x, y in XY])
    Ans = []
    for (x, y), factors in zip(XY, Factors):
        ans = 0
        if x == y:
            ans += x - 1
        fs = []
        ranges = []
        for f, gr in groupby(factors):
            fs.append(f)
            ranges.append(range(len(list(gr))+1))
        for t in product(*ranges):
            divisor = 1
            for n, f in zip(t, fs):
                divisor *= f ** n
            if divisor <= 2:
                continue
            a = divisor - 1
            denom = a * a - 1
            b, bm = divmod(a * x - y, denom)
            c, cm = divmod(a * y - x, denom)
            if bm == cm == 0 and b > 0 and c > 0:
                ans += 1
        Ans.append(ans)
    print("\n".join(map(str, Ans)))

main()