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

int main()
{
	int N;
	cin >> N;

	vector<int> d;
	for( int i = 1; i * i <= N; i++ ) {
		if( N % i == 0 ) {
			d.push_back( i );
			if( N / i != i ) d.push_back( N / i );
		}
	}
	int lcm = 1;
	int n = d.size();
	for( int i = 0; i < n; i++ ) {
		lcm = lcm / __gcd( lcm, d[i] ) * d[i];
	}

	cout << lcm << endl;
}