#include <iostream>
using namespace std;
int main()
{
    int x;   cin >> x;
    int a = 2;
    int counter = 1;
    int c = 1;
    int b;

    while ( x > c*c )
    {
        if ( c*c == x )
        {
            b = c;
            break;
        }

        else if ( c*c != x )
        {
            c ++;
        }
    }

    if ( c*c > x )
    {
        b = c*c;
    }

    while ( a <= b )
    {
        if ( x % a == 0 )
        {
            x = x / a;
            counter ++;
        }

        else 
        {
            a ++;
        }
    }

    cout << counter;

    return 0;
}