#include <iostream>
#include <fstream>
#include <iomanip>
#include <math.h>
#include <limits.h>
#include <algorithm>
#include <vector>
#include <list>
#include <stack>
#include <queue>
#include <set>
#include <map>
#include <bitset>
#include <string>
#include <string.h>
#include <sstream>
#include <ctime>

using namespace std;

#define eps 1e-12
#define pi 3.14159265358979323846
#define pb push_back
#define mp make_pair
#define st first
#define nd second
#define bgn begin
#define ll long long
#define ld long double
#define ull unsigned long long
#define ii pair<ll,ll>








const int N=1e6+10;
ll n,a,res;
bool p[N+10];
vector<ll>v;




void solve()
{
	for(int i=1;i<=N;i++)p[i]=1;
	p[1]=0;
	for(int i=2;i*i<=N;i++)
	{
		if(p[i])
		{
			for(int j=i+i;j<=N;j+=i)p[j]=0;
		}
	}
	v.clear();
	for(int i=1;i<=N;i++)if(p[i])v.pb(i);
	cin>>n;
	res=0;
	for(int i=1;i<=n;i++)
	{
		cin>>a;
		res+=a;
		for(int j=0;j<v.size()&&v[j]*v[j]<=a;j++)
		{
			while(a%v[j]==0)
			{
				a/=v[j];
				res+=a;
			}
		}
		if(a>1)res++;
	}
	cout<<res<<"\n";
}

int main()
{
	std::ios::sync_with_stdio(0);
	cin.tie(0);
#ifdef localProject
	freopen("in.txt","r",stdin);
#endif
	solve();
	return 0;
}