import java.io.*;
import java.awt.*;
import java.util.*;
public class Problem2
{
    public static void main (String[] args) throws IOException
    {
	BufferedReader in = new BufferedReader (new FileReader ("DATA2.txt"));
	PrintWriter out = new PrintWriter (new FileWriter ("OUT2.txt"));

	for (int a = 1 ; a <= 5 ; a++)
	{
	    int clavinaman = 1, clavin = 0;
	    int numscwares = Integer.parseInt (in.readLine ());

	    clavin = numscwares;

	    for (int b = 2 ; b <= 31 ; b++)
	    {
		if (numscwares % b == 0 && b != numscwares)
		{
		    clavin = clavin + ((numscwares / b) - (b - clavinaman));
		    clavinaman = b;
		}
		else if (b == numscwares)
		{
		    break;
		}
	    }
	    out.println (clavin);
	}
	out.close ();
    }
}