#include <iostream>
using namespace std;
int main()
{
    int n;  cin >> n;
    int asghar = 2;
    int sum = 1;

    while ( n != 1 )
    {
        if ( n % asghar == 0 )
        {
            n = n / asghar;
            sum ++;
        }

        else 
        {
            asghar ++;
        }
    }

    cout << sum;

    return 0;
}