#include<bits/stdc++.h>
using namespace std;
typedef long long int ll;

int main()
{
	ios::sync_with_stdio(false);
	ll n;
	cin >> n;
	ll arr[n],i,j,ans=0;
	for(i=0;i<n;i++)
		cin >> arr[i];
	for(i=0;i<n;i++)
	{
		ll x=arr[i];
		for(j=2;j*j<=x;j++)
		{
			if(x%j==0)
			{
				while(x%j==0)
				{
					ans+=x;
					x=x/j;
				}
			}
		}
		if(x>1)
			ans+=(x+1);
		else
			ans++;
	}
	cout << ans << "\n";
	return 0;
}