import java.util.Scanner;

public class Yukicoder300 {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        long x = sc.nextLong(), y = 1, z = 1;

        for (z = 1; z < x; z++) {
            if ((z * z % x) == 0) break;
        }

        System.out.println(z * z / x);
    }
}