#include <bits/stdc++.h>

using namespace std;
#define ull unsigned long long int 

ull primeFactors(ull n)
{
   ull sum=1;
    vector<ull> tempvec;
    while (n%2 == 0)
    {
       tempvec.push_back(2);
        n = n/2;
    }
 
   
    for (int i = 3; i <= sqrt(n); i = i+2)
    {
       
        while (n%i == 0)
        {
            tempvec.push_back(i);
            n = n/i;
        }
    }

    if (n > 2)
        tempvec.push_back(n);
    for(int i=0;i<tempvec.size();i++)
    {
        sum = sum*tempvec[i]+1;
    }
    
    return sum;
    
}
ull longestSequence(vector <ull> a) {
    ull sum=0;
   for(int i=0;i<a.size();i++)
   {
      sum+= primeFactors(a[i]);
   }
    return sum;
}

int main() {
    int n;
    cin >> n;
    vector<ull> a(n);
    for(int a_i = 0; a_i < n; a_i++){
       cin >> a[a_i];
    }
    ull result = longestSequence(a);
    cout << result << endl;
    return 0;
}