#include<iostream>
#include<cmath>
#define long long long
using namespace std;
long n,p[100],totalans;
void doit()
{
    int l=0;
    for (int i=2;i<=sqrt(n);i++)
    {
        while (n%i==0)
        {
            p[++l]=i;
            n/=i;
        }
    }
    if (n>1)
        p[++l]=n;
    long cur=1,ans=0;
    for (int i=l;i>=1;i--)
    {
        ans+=cur;
        cur*=p[i];
    }
    ans+=cur;
    totalans+=ans;
}
void readit()
{
    int t;
    cin>>t;
    while (t>0)
    {
        t--;
        cin>>n;
        doit();
    }
    cout<<totalans;
}
int main()
{
    readit();
    return 0;
}