#! /usr/bin/env python3

def f(n):
    l = []
    a, b = 0, 2
    while b * b <= n:
        if n % b == 0:
            n //= b
            l += [b]
        else:
            b += 1 + a
            a = 1
    if n > 1 : l += [n]
    return [1] + l

A, B = map(int, input().split())
s = f(A + B)
p = f(A * B)
l = []
ans = 1
for i in s:
    if i in p:
        p.remove(i)
        l += [i]
for i in l:
    ans *= i
print(ans)