#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define rrep(i, n) for (int i = (int)(n - 1); i >= 0; i--)
#define all(x) (x).begin(), (x).end()
#define sz(x) int(x.size())
using namespace std;
typedef long long ll;
const int INF = 1e9;
const ll MOD = 1e9 + 7;
const ll LINF = 1e18;
template <class T>
void get_unique(vector<T>& x) {
    sort(all(x));
    x.erase(unique(x.begin(), x.end()), x.end());
}
template <class T>
bool chmax(T& a, const T& b) {
    if (a < b) {
        a = b;
        return 1;
    }
    return 0;
}
template <class T>
bool chmin(T& a, const T& b) {
    if (b < a) {
        a = b;
        return 1;
    }
    return 0;
}
template <class T>
vector<T> make_vec(size_t a) {
    return vector<T>(a);
}
template <class T, class... Ts>
auto make_vec(size_t a, Ts... ts) {
    return vector<decltype(make_vec<T>(ts...))>(a, make_vec<T>(ts...));
}
template <typename T>
ostream& operator<<(ostream& os, vector<T> v) {
    for (int i = 0; i < sz(v); i++) {
        os << v[i];
        if (i < sz(v) - 1) os << " ";
    }
    return os;
}
int main() {
    int n;
    cin >> n;
    vector<ll> a(n);
    rep(i, n) cin >> a[i];
    ll ans = accumulate(all(a), 0ll) * ll(n);
    vector<ll> s(200200);
    rep(i, n) s[a[i]]++;
    rep(i, 200200 - 1) s[i + 1] += s[i];
    auto b = a;
    get_unique(b);
    vector<ll> k(200200);
    for (int x : b) {
        for (int i = 1; i * x < 200200; i++) {
            k[x] += n - s[i * x - 1];
        }
    }
    for (int x : a) {
        ans -= x * k[x];
    }
    cout << ans << '\n';
}