import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

    static long longestSequence(long[] a) {
        
        /*ArrayList<Integer> al=new ArrayList<Integer>();
        int i=1;
        while(i<=Math.sqrt(a[0]))
        {
            if(a[0]%i==0)
            {
                if(!al.contains(i) && !al.contains(a[0]/i))2
                2
                {
                al.add(i);
                
                al.add(a[0]/i);
                }
            }
            i++;
                
                
                
        }*/
        return 0;
    }
    public static long get_max(long a,long num)
    {
        int r=2;
        long t=a;
        int count=1;
        long sum=0;
        while(t<=num)
        {
            sum=sum+t;
            count++;
            Double p=(a*(Math.pow(r,count-1)));

            t=p.intValue();
        }
        
        return sum+1;
    }


        
        
        
            public static int  primeFactors(long number)
        { 
            Set<Integer> primefactors = new HashSet<>(); 
            long copyOfInput = number; 
            for (int i = 2; i <= copyOfInput; i++) 
        {
        if (copyOfInput % i == 0)
        { 
            primefactors.add(i); 
         copyOfInput /= i; i--; 
     } 
 } 
 int max=Collections.max(primefactors);
 //System.out.println(max);
 return max;

}

    public static void main(String[] args) {
        //System.out.print(primeFactors(24));
        //get_max(3,24);
        Scanner in = new Scanner(System.in);
        int n = in.nextInt();
        long[] a = new long[n];
        for(int a_i = 0; a_i < n; a_i++){
            a[a_i] = in.nextLong();

        }
         long result=0;
        for(int i=0;i<n;i++)
        {
           if(a[i]!=1)
           {
            result=result+get_max(primeFactors(a[i]),a[i]);
            }
            else
            {
                result=result+1;
            }
        //System.out.println(result);
        }
        System.out.println(result);
        in.close();
    }
}