#include <stdio.h>
#include <malloc.h>

int main(){
    int size = 0;
    scanf("%d",&size);

    int *array = (int *) malloc(sizeof(int) * size);
    for(int i = 0;i < size;i++){
        scanf("%d",&(array[i]));
    }
    int res = 0;
    int result = 0;
    for(int i = 0;i < size;i++){
        for(int j = 0;j < size;j++){
            if(array[i] % array[j] == 0 || array[j] % array[i] == 0){
                res++;
            }else {
                break;
            }
        }
        if(res == size){
            result = array[i];
            break;
        }else {
            res = 0;
        }
    }
    int res_res = 0;
    for(int i = 0;i < size;i++){
        res_res += array[i];
    }

    free(array);
    printf("%d",res_res - result);
}