#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;
long long sum(long long n)
{
    long long s=n,i;
    while(n%2==0)
    {
        n/=2;
        s+=n;
    }
    for(i=3;i*i<=n;i+=2)
    {
        while(n%i==0)
        {
            n/=i;
            s+=n;
        }
    }
    if(n!=1)
        s++;
    return s;
}
int main() {  
    int n;
    cin >> n;
    long long s=0;
    vector <long long> a(n);
    for (int i = 0; i < n; i++) {
        cin >> a[i];
        s+=sum(a[i]);
    }
    cout<<s;
    /* Enter your code here. Print output to STDOUT */   
 
    return 0;
}