#include <bits/stdc++.h>
 
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
#define go_baby_go ios::sync_with_stdio(false);cin.tie(NULL);cout.tie(0);
#define pb push_back
#define pp pop_back
#define f first
#define se second
//#define mp make_pair

const int mod=(int)1e9;
const int N=1000000;

inline ll search(ll &x){
  int i=2;
  ll ans=x;
  while(x!=1 && i<=N){
    while(x%i==0){
      x/=i;
      ans+=x;
    }
    i++;
  }
   if(x>1)ans++;
  return ans;
}
int main(){
  //go_baby_go
  int n;
  cin>>n;
  ll ans=0,x;
  for(int i=1;i<=n;i++){
    cin>>x;
   ans+=search(x);

  }
  cout<<ans;
  return 0;
}