#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <math.h>
#include <vector>
#include <queue>
#include <algorithm>
#include <sstream>
#include <string>
#include <map>
#include <math.h>
#include <time.h>

using namespace std;

#define FOR(I,N) for(int I = 0; I < (int)(N); I++)
#define FIN(V) cout<<V<<endl
#define pb push_back
#define INF (1 << 30)
#define ll long long

typedef pair<int, int> P;

string sValueOf(int v){stringstream ss;ss<<v;return ss.str();}
int parseInt(string v){int i;stringstream ss(v);ss>>i;return i;}
void fast_io() {cin.tie(0); ios::sync_with_stdio(false);}

int main(){
	int i,j;
	ll X,Z = 1,next;
	double Y;
	cin>>X;
	if(X%2==0){///偶数
		Z++;
	}
	ll adder = 2;
	if(X>100000000)adder+=2;
	///if(X>100000000000)adder+=2;
	///time_t s = clock();
	while(true){
		if((Z*Z)%X==0){
			Y = (Z*Z)/X;break;
		}
		Z+=adder;
		if(Z==229371542){
			adder = 1000;
		}
	}
	///cout<<clock()-s<<endl;
	cout<<(ll)Y<<endl;
	return 0;
}