#include <bits/stdc++.h>

using namespace std;
long par(long a , long result , long ant)
{
    
    long esp = 1;
   long aux = a;
    while(a != 1)
    {
        long b = a;
        if(a % 2 != 0)
        {
            for(long i = 3 ; i * i <= a ; i = i + 2)
            {
                if(a % i == 0)
                {
                    b = i;
                    break;
                }
                //cout << " valor de i: " << i << "\n";
            }
        }
        else
            b = 2;
        esp = b;
        result = a / esp + result;
        a = a / esp;
       /* cout << " valor de esp: " << esp << "\n";
        cout << " valor de re: " << result << "\n";
        cout << " valor de a: " << a << "\n";*/
    }
    return result;
}

long longestSequence(vector <long> a) 
{
    long res = 0;
    //cout << par(45 , 45,0);
    for(int i = 0; i < a.size(); i++)
    {
       // cout << "valor de a " << a[i] <<"\n";
        if(a[i] != 1)
            res += par(a[i] , a[i] ,0);
        else
            res += 1;
        //cout <<  res <<"\n";
    }
    
    return res;
}


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