#include"bits/stdc++.h"
using namespace std ;
typedef long long ll;

ll A[20004];
long long x;
int main()
{
	int N;
	
	scanf("%d",&N);
	
	long long ans=0;
	
	for(int j=1;j<=N;j++)
	{
	
	scanf("%lld",&x);
	long long y=x;
	
	if(x==1)
	{
		ans++;
		continue;
	}
	
	vector <ll> X;
	
	while(x%2==0)
	{
	X.push_back(2);
	x/=2;	
	}
	
	for(long long i=3;i<=sqrt(x);i+=2)
	{
		while(x%i==0)
		{
			X.push_back(i);
			x/=i;
		}
	}
	
	if(x>1)
	X.push_back(x);
	
	sort(X.begin(),X.end());
	
	ans+=y;
	
	for(int i=0;i<X.size();i++)
	{
	y=y/X[i];
	ans+=(y);
	}
	
	}
	
	printf("%lld",ans);
	
	return 0;
}