#include<bits/stdc++.h>
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
#define ll long long
#define all(a) a.begin(),a.end()
#define endl '\n'

using namespace std;

int n;
ll x;

int main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);

    cin>>n;
    ll ans=0;
    for(int i=1;i<=n;++i)
    {
        cin>>x;
        if(x==1)
        {
            ans+=1;
            continue;
        }
        vector<ll> a;
        int sq=sqrt(x);

        ll g;

        for(int j=2;j<=sq;++j)
        {
            while(x%j==0)
            {
                x/=j;
                a.pb(j);
            }
        }
        if(x!=1)a.pb(x);

        g=1;
        ans+=g;
        for(int i=a.size()-1;i>=0;i--)
        {
            g*=a[i];
            ans+=g;
        }
    }

    cout<<ans;

}