#include <bits/stdc++.h>

typedef long long ll;
using namespace std;

vector<int>p;
void sieve(){
	vector<bool>isp(1e6 + 5, 1);
	for(int i = 2; i < 1e6 + 5; i++){
		if(isp[i]){
			p.push_back(i);
			for(int j = 2 * i; j < 1e6 + 5; j += i)
				isp[j] = 0;
		}
	}
}

int main(){
	ios_base::sync_with_stdio(0);
    sieve();
	int n; cin >> n;
	ll res = 0;
	while(n--){
		ll tmp; cin >> tmp;
        if(tmp == 1){
            res++;
            continue;
        }
		res += tmp + 1;
		for(int i = 0; i < p.size(); i++){
			while(tmp % p[i] == 0){
				tmp /= p[i];
				if(tmp == 1)
					break;
				res += tmp;
			}
		}
	}
	cout << res << endl;
	return 0;
}