#include <bits/stdc++.h>

using namespace std;

typedef unsigned long long ul;

vector<ul> divisores(ul n);

void s(const vector<ul>& v){
    cout << v[0];
    for(int i = 1; i < v.size(); ++i)
        cout << " " << v[i];
    cout << endl;
}

ul mx = (ul)1e12;
const ul N = 1;

vector<ul> vul(){
    vector<ul> v(N);
    int j = 0;
    v[0] = 6;
    return v;
}

ul seq(ul x){
    ul ans = 1;
    if(x == 1) return ans;
    else {
        vector<ul> div = divisores(x);
        for(int i = 0; i < div.size(); ++i){
            ans = div[i]*ans + 1;
        }
        return ans;
    }
}

vector<ul> divisores(ul n){
    ul c = n;
    ul d = 2;
    vector<ul> div;
    while(d <= c){
        if(d*d > c){
            div.push_back(c);
            break;
        }
        while(c%d == 0){
            div.push_back(d);
            c /= d;
        }
        ++d;
    }
    return div;
}

int main(){
    int n;
    cin >> n;
    ul u;
    ul s = 0;
    for(int i = 0; i < n; ++i){
        cin >> u;
        s += seq(u);
    }
    cout << s << endl;
}