#include<bits/stdc++.h>

using namespace std;

typedef long long ll;

int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin>>n;
    ll ans = 0;
    for(int i=0;i<n;i++)
    {
        ll x;
        cin>>x;
        vector<ll> primes;
        for(ll j=2;j*j<=x;j++)
            while(x%j==0)
                primes.push_back(j),x/=j;
        if(x>1)
            primes.push_back(x);
        ll cur = 1;
        for(int j=0;j<primes.size();j++)
            cur = 1 + primes[j]*cur;
        ans += cur;
    }
    cout<<ans<<"\n";

    return 0;
}