// write your code here cpp
#include<iostream>
#include<cmath>

using namespace std;

int CountFactor(int n)
{
    int count = 0;
    for (int i = 2; i <= sqrt(n); ++i)
    {
        if (n % i == 0)
        {
            while (n % i == 0)
            {
                n /= i;
            }
            count++;
        }
    }
    if (n != 1)
    {
        count++;
    }
    return count;
}

int main()
{
    int n;
    while (cin >> n)
    {
        int res = CountFactor(n);
        cout << res << endl;
    }
    return 0;
}