#include<iostream>
#include<bits/stdc++.h>
// iteration and input/output stream
#define rep(i, begin, end) for (__typeof(end) i = (begin) - ((begin) > (end)); i != (end) - ((begin) > (end)); i += 1 - 2 * ((begin) > (end)))
#define srep(i, begin, end) for (__typeof(end) i = begin; i != end; i++)
#define si(x) int x; scanf("%d", &x)
#define sll(x) ll x; scanf("%lld", &x)
#define pi(x) printf("%d", x)
#define pll(x) printf("%lld", x)
#define nl prinf("\n")
#define tr(cont,it) \
for(typeof(cont.begin()) it = cont.begin(); it!= cont.end() ; it++)

#define tc() int t; cin >> t ; while (t--)
//STL shortcuts
#define pb push_back
#define pf push_front
#define pob pop_back
#define pof pop_front
#define F first
#define S second
#define MP make_pair

// Error detection
#define trace1(x)                cerr<<#x<<": "<<x<<endl
#define trace2(x, y)             cerr<<#x<<": "<<x<<" | "<<#y<<": "<<y<<endl
#define trace3(x, y, z)          cerr<<#x<<":" <<x<<" | "<<#y<<": "<<y<<" | "<<#z<<": "<<z<<endl
#define trace4(a, b, c, d)       cerr<<#a<<": "<<a<<" | "<<#b<<": "<<b<<" | "<<#c<<": "<<c<<" | "<<#d<<": "<<d<<endl
#define trace5(a, b, c, d, e)    cerr<<#a<<": "<<a<<" | "<<#b<<": "<<b<<" | "<<#c<<": "<<c<<" | "<<#d<<": "<<d<<" | "<<#e<< ": "<<e<<endl
#define trace6(a, b, c, d, e, f) cerr<<#a<<": "<<a<<" | "<<#b<<": "<<b<<" | "<<#c<<": "<<c<<" | "<<#d<<": "<<d<<" | "<<#e<< ": "<<e<<" | "<<#f<<": "<<f<<endl

using namespace std;

typedef long long int ll; // 64 bit integer
typedef unsigned long long int  ull; // 64 bit unsigned integer
typedef long double ld;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<ll> vll;
typedef pair<int,int> pii;
typedef pair<int,ll> pill;

inline void smax(int &x , int y) { x = max(x , y) ; }
inline void smin(int &x , int y) { x = min(x , y) ; }

int main()
{
    int n;
    cin>>n;
    ll v[n];
    ll ans=0;
    rep(i,0,n)
    {
        cin>>v[i];
        if(v[i]==1)
        {
            ans+=1;
            continue;
        }
        ll tmp=0;
        for(ll j=2;j*j<=v[i] ;j++)
        {
            if(v[i]%j==0)
            {
                tmp=j+1;
                v[i]/=j;

                break;
            }
        }
        if(tmp==0)
        {
            ans+= v[i]+1;
            continue;
        }


        for(ll j=tmp-1;j*j<=v[i]; j++)
        {
            if(v[i]%j==0)
            {
                tmp = j*tmp+1;
                v[i]/=j;
                j--;
            }
            //trace2(i,v[i]);
        }
        tmp = v[i]*tmp+1;
        ans+= tmp;
    }
    cout<<ans<<endl;

}