import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		int[]A = new int[n];
		int min = Integer.MAX_VALUE;
		for(int i = 0; i < n; i++) {
			int t = scan.nextInt();
			A[i] = t;
			if(min > t) {
				min = t;
			}
		}
		scan.close();
		List<Integer> list = new ArrayList<Integer>();
		for(int i = 2; i <= min; i++) {
			if(min % i == 0) {
				list.add(i);
			}
		}
		for(int i = list.size() - 1; i >= 0; i--) {
			int k = list.get(i);
			boolean flag = true;
			for(int j = 0; j < n; j++) {
				if(A[j] % k != 0) {
					flag = false;
					break;
				}
			}
			if(flag) {
				for(int j = 0; j < n; j++) {
					A[j] = A[j] / k;
				}
			}
		}
		int cnt = 0;
		for(int i = 0; i < n; i++) {
			cnt += A[i];
		}
		System.out.println(cnt);
	}
}