import java.io.*;
import java.util.*;
import java.util.function.*;
import java.util.stream.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        TreeMap<Integer, Integer> added = new TreeMap<>();
        List<Set<Integer>> values = new ArrayList<>();
        for (int i = 0; i < n; i++) {
            int x = sc.nextInt();
            Set<Integer> current = new HashSet<>();
            for (int j = 2; j <= Math.sqrt(x); j++) {
                while (x % j == 0) {
                    x /= j;
                    current.add(j);
                    added.put(j, null);
                }
            }
            if (x > 1) {
                current.add(x);
                added.put(x, null);
            }
            values.add(current);
        }
        int idx = n;
        for (int x : added.keySet()) {
            added.put(x, idx++);
        }
        UnionFindTree uft = new UnionFindTree(idx);
        for (int i = 0; i < n; i++) {
            for (int x : values.get(i)) {
                uft.unite(i, added.get(x));
            }
        }
        System.out.println(Math.min(uft.size * 2, (uft.size - 1L) * added.firstKey()));
    }
    
    static class UnionFindTree {
        int[] parents;
        int size;
        
        public UnionFindTree(int size) {
            this.size = size;
            parents = new int[size];
            for (int i = 0; i < size; i++) {
                parents[i] = i;
            }
        }
        
        public int find(int x) {
            if (x == parents[x]) {
                return x;
            } else {
                return parents[x] = find(parents[x]);
            }
        }
        
        public boolean same(int x, int y) {
            return find(x) == find(y);
        }
        
        public void unite(int x, int y) {
            if (!same(x, y)) {
                size--;
                parents[find(x)] = find(y);
            }
        }
    }
}
class Scanner {
    BufferedReader br;
    StringTokenizer st = new StringTokenizer("");
    StringBuilder sb = new StringBuilder();
    
    public Scanner() {
        try {
            br = new BufferedReader(new InputStreamReader(System.in));
        } catch (Exception e) {
            
        }
    }
    
    public int nextInt() {
        return Integer.parseInt(next());
    }
    
    public long nextLong() {
        return Long.parseLong(next());
    }
    
    public double nextDouble() {
        return Double.parseDouble(next());
    }
    
    public String next() {
        try {
            while (!st.hasMoreTokens()) {
                st = new StringTokenizer(br.readLine());
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            return st.nextToken();
        }
    }
    
}