#include <math.h>
#include <stdio.h>
#include "math.h"
int main() {
    int n;
    while (scanf("%d", &n) != EOF) {
        int count=0;
        
            for(int i=2;i*i<=n;i++)
            {
                while(n%i==0)
                {
                    count++;
                    n=n/i;
                }
            }
        
        if(n>1)	printf("%d",count+1);
		else	printf("%d",count);
    }
    return 0;
}