from collections import defaultdict
def make_divisors(n):
    divisors = []  #必要に応じてsetにしても良いかも
    i = 1
    while i ** 2 <= n:
        if n % i == 0:
            divisors.append(i)
            if i ** 2 != n:
                divisors.append(n//i)
        i += 1
    divisors.sort()
    return divisors

N = int(input())
A = list(map(int,input().split()))
A.sort()
INF = 10 ** 6
dic = defaultdict(lambda: INF)
ans = 0

for i,a in enumerate(A):
    if i == 0:
        D = make_divisors(a)
        for d in D:
            dic[d] = min(dic[d],a//d)
    else:
        D = make_divisors(a)
        tmp = INF
        for d in D:
            tmp = min(tmp,dic[d]*a)
            dic[d] = min(dic[d],a//d)
        ans += tmp
print(ans)