import java.io.*;
import java.util.*;
import java.math.*;
import java.util.concurrent.*;

public final class breaking_sticks
{
    static BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
	static FastScanner sc=new FastScanner(br);
    static PrintWriter out=new PrintWriter(System.out);
	static Random rnd=new Random();
	
	static long solve(long n)
	{
		List<Long> list=new ArrayList<>();
		
		for(long i=2;i*i<=n;i++)
		{
			int ctr=0;
			
			while(n%i==0)
			{
				n/=i;list.add(i);
			}
		}
		
		if(n>1)
		{
			list.add(n);
		}
		
		long curr=1;
		
		for(int i=0;i<list.size();i++)
		{
			curr=(list.get(i)*curr)+1;
		}
		
		return curr;
	}
	
    public static void main(String args[]) throws Exception
    {
		int n=sc.nextInt();long res=0;
		
		for(int i=0;i<n;i++)
		{
			res=res+solve(sc.nextLong());
		}
		
		out.println(res);out.close();
    }
}
class FastScanner
{
    BufferedReader in;
    StringTokenizer st;

    public FastScanner(BufferedReader in) {
        this.in = in;
    }
	
    public String nextToken() throws Exception {
        while (st == null || !st.hasMoreTokens()) {
            st = new StringTokenizer(in.readLine());
        }
        return st.nextToken();
    }
	
	public String next() throws Exception {
		return nextToken().toString();
	}
	
    public int nextInt() throws Exception {
        return Integer.parseInt(nextToken());
    }

    public long nextLong() throws Exception {
        return Long.parseLong(nextToken());
    }

    public double nextDouble() throws Exception {
        return Double.parseDouble(nextToken());
    }
}