#include<stdio.h>
#include<stdlib.h>
#include<math.h>
#include<string.h>

int W_Length(char *str){
	int length = 0;
	while(*str++ != '\0')
		length++;
	return length;
}

double deg(double theta){//deg to theta
return theta*(2*3.14159265359)/360;
}

int cmp( const void *p, const void *q ) {
    return -*(int*)p + *(int*)q;
}
//qsort(a,n,sizeof(int),cmp);
//char s[n][11]

int cmp_s(const void * left, const void * right)
{
	char *left_char = (char *)left;
  char *right_char = (char *)right;
  return strcmp(left_char, right_char);
}
//qsort(s,n,sizeof(s[0]),cmp_s);

int end(void){
return 0;
}

long long int waru(long long int *n,long long int x){
  long long int y=x,j=0;
  while(1){
    if((*n)%y==0){
    *n=(*n)/y;
      y=x*y;
      j++;
    }
    else{
      break;
    }
  }

    return j;  

}

int main (void){

long long int n,count=0,i,j,k,temp;
scanf("%lld", &n);
  temp=n;
  if(n%2==0){
  count+=waru(&n,2);
  }

    	for(i=3;i<sqrt(temp);i+=2)
	{
		k=0;
		for(j=3;j<=sqrt(i);j+=2)
		{
			if(i%j==0)
			{
				k=1;
              break;
			}
        }
		if(k==0&&n%i==0){
        count+=waru(&n,i);
        
        }
	}
  if(temp==n&&n!=1){
  count++;
  }
printf("%lld\n",count);
return 0;
}

