#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using P = pair<int, int>;
using T = tuple<int, int, int>;
#define al(a) a.begin(), a.end()
#define ral(a) a.rbegin(), a.rend()
#define sz(a) (int)a.size()
#define rep(i, n) for (int i = 0; i < (n); ++i)
#define rrep(i, n) for (int i = 1; i <= (n); ++i)
#define drep(i, n) for (int i = (n)-1; i >= 0; --i)
#define db(a, b) cout << #a << ": " << a << " " << #b << ": " << b << endl;

int main() {
  ll a, b;
  cin >> a >> b;
  ll c = a + b;
  //   ll ans = max(gcd(c, a), gcd(c, b));
  auto f = [&](ll x) {
    map<ll, ll> res;
    for (ll i = 2; i * i <= x; ++i) {
      if (x % i) continue;
      while (x % i == 0) {
        res[i]++;
        x /= i;
      }
    }
    if (x != 1) res[x]++;
    return res;
  };
  auto nc = f(c);
  auto na = f(a);
  auto nb = f(b);
  for (auto [p, e] : nb) { na[p] += e; }

  auto g = [&](ll x, ll e) {
    ll res = 1;
    while (e > 0) {
      if (e & 1) res *= x;
      x *= x;
      e /= 2;
    }
    return res;
  };

  ll ans = 1;
  for (auto [p, e] : nc) {
    if (na.find(p) == na.end()) continue;
    ll cnt = min(na[p], e);
    // while (cnt) {
    //   ans *= p;
    //   cnt--;
    // }
    ans *= g(p, cnt);
  }
  cout << ans << endl;
  return 0;
}