#include <bits/stdc++.h>
using namespace std;

int main() {  
    int n;
    cin >> n;
  
    vector <long long> a(n);
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
  
    /* Enter your code here. Print output to STDOUT */   
    long long int ans=0,j;
    for(int i=0;i<n;i++)
    {
        long long int ele=a[i],curr=1;
        vector<long long int>tmp;
        for(j=2;j*j<=ele;j++)
            while(ele%j==0)
            {
                tmp.push_back(j);
                ele/=j;
            }
        if(ele>1)
               tmp.push_back(ele);
        ans+=curr;
        for(j=tmp.size()-1;j>=0;j--)
        {
            curr=curr*tmp[j];
            ans+=curr;
        }
    }
    cout<<ans<<endl;
    return 0;
}