#include "bits/stdc++.h"
using namespace std;

typedef long long ll;

int main() {
	ll X;
	cin >> X;

	for (ll Z = 1; Z <= X; Z++) {
		//cout << Z*Z/X << endl;
		if ((Z*Z)%X == 0) {
			cout << Z*Z/X << endl;
			return 0;
		}
	}
}