#include <math.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include <limits.h>
#include <stdbool.h>

long int sequence(long int a) {
    // printf(">>>%ld\n", a);
    if(a == 1) return 1;
    long int divisor = -1;
    for(long int i = (long long int)sqrt(a); i < a; i++) {
        if(a % i == 0) {
            divisor = i;
            break;
        }
    }
    
    if(divisor == -1) divisor = a;
    long int quotient = a / divisor;
    if(quotient > divisor) {
        return 1 + sequence(divisor) * quotient;
    } else {
        return 1 + sequence(quotient) * divisor;
    }
}

long int longestSequence(int a_size, long int* a) {
    long int sum = 0;
    for(int i = 0; i < a_size; i++) {
        sum += sequence(*(a++));
    }
    return sum;
}

int main() {
    int n; 
    scanf("%i", &n);
    long int *a = malloc(sizeof(long int) * n);
    for (int a_i = 0; a_i < n; a_i++) {
       scanf("%li",&a[a_i]);
    }
    long int result = longestSequence(n, a);
    printf("%ld\n", result);
    return 0;
}