import java.util.*; 
import java.io.*; 
public class dwite2 {
	public static void main (String[]args) throws IOException {
		File inputFile = new File("DATA2.txt");
		File outputFile = new File("OUT2.txt");
		BufferedReader br = new BufferedReader(new FileReader(inputFile));
		BufferedWriter bw = new BufferedWriter(new FileWriter(outputFile)); 
		
		for (int i=0; i<5; i++) { //5 inputs
			int n = Integer.parseInt(br.readLine());
			int comb=0; 
			for (int k=0; k<n; k++) {
				int num = k+1;
				int to = (int)Math.sqrt(num); 
				//start from 1
				for (int a =1; a<=to; a++) {
					if (num*1.0%a==0)
						comb++; 
				}
			}
			bw.write(comb+"");
			if (i!=4) 
				bw.newLine(); 
		}
		bw.close(); 
	}
}