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#include<iostream>
#include<cmath>
#include<algorithm>
#include<string>
#include<map>
using namespace std;
int main() {
int n;
while (cin >> n) {
int sum = 0;
int temp = n;
for (int i = 2; i * i <= temp; i++) {
while (temp % i == 0) {
sum++;
temp /= i;
}
}
if (temp > 1) sum++;
cout << sum << endl;
}
return 0;
}
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