import java.util.*;
import java.io.*;

public class Lol222
{
    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 z = 0 ; z < 5 ; z++)
	{
	    int lol = Integer.parseInt (in.readLine ());
	    int counter = 0;
	    for (int x = 1 ; x <= lol ; x++)
	    {
		for (int y = 1 ; y <= (int) Math.sqrt (x) ; y++)
		{
		    if (x % y == 0)
		    {
			counter++;
		    }
		}
	    }
	    out.println (counter);
	}
	out.close ();
    }
}