#include <bits/stdc++.h>
using namespace std;
/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main(int argc, char** argv) {
	long long n,t=0;
	cin>>n;
	for(long long i=1;;i++){
		for(long long j=1;j<=i;j++){
			if(i%j==0){
				t++;
			}
		}
		if(t==n){
			cout<<i;
			return 0;
		}else{
			t=0;
		}
	}
	return 0;
}