#!/bin/python3

import sys

def longestSequence(a):
    count = 0  
    for i in range(0,len(a)):
        fact = list()
        fact.append(1)
        val = a[i]
        k = 2
        while(k<= val):
            if(val%k == 0):
                fact.append(k)
                val = int(val/k)
                k = 1
            k = k+1
        total = len(fact)
        mult = 1
        abc = 1
        for k in range(total,1,-1):
            mult = mult*fact[k-1]
            abc = abc + mult
        count = count + abc
    return(count)
        
    

if __name__ == "__main__":
    n = int(input().strip())
    a = list(map(int, input().strip().split(' ')))
    result = longestSequence(a)
    print(result)