import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.HashMap;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
import java.util.Map;
import java.io.BufferedReader;
import java.io.InputStream;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 *
 * @author Hieu Le
 */
public class Solution {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        BreakingSticks solver = new BreakingSticks();
        solver.solve(1, in, out);
        out.close();
    }

    static class BreakingSticks {
        private Map<Long, Long> cache;

        public void solve(int testNumber, InputReader in, PrintWriter out) {
            cache = new HashMap<>();
            int n = in.nextInt();
            long result = 0;
            for (int i = 0; i < n; ++i)
                result += explore(in.nextLong());
            out.println(result);
        }

        private long explore(long length) {
            if (length == 1)
                return 1;
            if (cache.containsKey(length))
                return cache.get(length);

            long result = 1 + length;
            for (long a = 2; a * a <= length; ++a) {
                if (length % a == 0) {
                    long b = length / a;
                    result = Math.max(result, 1 + a * explore(b));
                    result = Math.max(result, 1 + b * explore(a));
                }
            }

            cache.put(length, result);
            return result;
        }

    }

    static class InputReader {
        private BufferedReader reader;
        private StringTokenizer tokenizer;
        private static final int BUFFER_SIZE = 32768;

        public InputReader(InputStream stream) {
            reader = new BufferedReader(
                    new InputStreamReader(stream), BUFFER_SIZE);
            tokenizer = null;
        }

        public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

        public int nextInt() {
            return Integer.parseInt(next());
        }

        public long nextLong() {
            return Long.parseLong(next());
        }

    }
}