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

public class Solution {
    static Map<Long, Long> memo = null;
    
    static boolean isPrime(long a) {
        if (a < 2)
            return false;
        
        int upperLimit = (int) Math.sqrt(a);
        for (int i = 2; i <= upperLimit; ++i)
            if (a % i == 0)
                return false;
        return true;
    }
    
    static long longestSequenceUtil(long a) {
        if (a == 1)
            return 1;
        
        if (memo.get(a) != null) {
            //System.out.println(a + ": memo " + memo.get(a));
            return memo.get(a);
        }
        
        long max = Long.MIN_VALUE;
        long answer = 0;
        
        if (isPrime(a)) {
            answer =  1 + a;
        } else {
            int upperLimit = (int)Math.sqrt(a);
            for (int d = 2; d <= upperLimit; ++d) {
                if (a % d == 0) {
                    answer = (a / d) * longestSequenceUtil(d);
                    max = Long.max(max, answer);
                    answer = d * longestSequenceUtil(a / d);
                    max = Long.max(max, answer);
                }
            }
            answer = 1 + max;
        }           
        
        memo.put(a, answer);
        return answer;
    }
    
    static long longestSequence(long[] a) {
        memo = new Hashtable<Long, Long>();
        long ls = 0;
        
        for (int i = 0; i < a.length; ++i) {
            long answer = longestSequenceUtil(a[i]);
            ls += answer;
            //System.out.println(a[i] + " " + answer);
        }
        
        return ls;
    }

    public static void main(String[] args) {
        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 = longestSequence(a);
        System.out.println(result);
        in.close();
    }
}