#include<iostream>
#include <math.h>
#include <stdio.h>
using namespace std;
int main()
{
	int n;
	cin >> n;
	int x = n+1;
	while(x%n != 0)
	    x++;
	cout << x << endl;
	for(int i = 1; i < n ; i++)
	{
		if(n%i == 0)
		    cout << i << " "; 
	}
}