#include <bits/stdc++.h>
using namespace std;

vector<long long> p;
bool criba[1000010];
int n;
long long resp,a,sum,prod,b;

int main()
{
    ios::sync_with_stdio(false);

    p.push_back(2);
    for(int i=3; i<=1000; i+=2)
    {
        if(criba[i]) continue;
        for(int j=i*i; j<=1000000; j+=i) criba[j] = true;
    }

    p.push_back(2);
    for(int i=3; i<=1000000; i+=2)
    {
        if(!criba[i])
            p.push_back(i);
    }

    cin >> n;

    for(int i=0; i<n; i++)
    {
        cin >> a;
        b = a;
        if(a == 1)
        {
            resp++;
            continue;
        }
        sum = 0;
        prod = 1;
        for(int j=p.size()-1; j>=0; j--)
        {
            while(a%p[j] == 0)
            {
                a/=p[j];
                prod*=p[j];
                sum+=prod;
            }

        }

        if(a!=1)
        {
            sum = a;
            prod = a;
            for(int j=p.size()-1; j>=0; j--)
            {
                while(b%p[j] == 0)
                {
                    b/=p[j];
                    prod*=p[j];
                    sum+=prod;
                }

            }

        }
        resp+=sum+1;
    }

    cout << resp;
    return 0;
}