from collections import defaultdict

class UnionFind():
    def __init__(self, n):
        self.n = n
        self.root = [-1]*(n+1)
        self.rank = [0]*(n+1)

    def find(self, x):
        if(self.root[x] < 0):
            return x
        else:
            self.root[x] = self.find(self.root[x])
            return self.root[x]

    def unite(self, x, y):
        x = self.find(x)
        y = self.find(y)

        if(x == y):
            return
        elif(self.rank[x] > self.rank[y]):
            self.root[x] += self.root[y]
            self.root[y] = x
        else:
            self.root[y] += self.root[x]
            self.root[x] = y
            if(self.rank[x] == self.rank[y]):
                self.rank[y] += 1

    def same(self, x, y):
        return self.find(x) == self.find(y)

    def size(self, x):
        return -self.root[self.find(x)]

    def roots(self):
        return [i for i, x in enumerate(self.root) if x < 0]

    def group_size(self):
        return len(self.roots())

    def group_members(self):
        group_members = defaultdict(list)
        for member in range(self.n):
            group_members[self.find(member)].append(member)
        return group_members

def Eratosthenes(N):
  is_prime = [1 for i in range(N+1)]
  is_prime[0] = is_prime[1] = 0
  P = []
  for p in range(2,N+1):
    if is_prime[p] == 0:
      continue
    P.append(p)
    for d in range(2,N//p+1):
      q = p*d
      is_prime[q] = 0
  return P

P = Eratosthenes(200000)
n = len(P)
N = int(input())
r = n + N
uf = UnionFind(n+N)
A = list(map(int,input().split()))
G = [[] for i in range(200001)]
for i in range(N):
  G[A[i]].append(i)
g = 200000
for i in range(n):
  u = N + i
  p = P[i]
  f = 1
  for j in range(200001):
    if p*j > 200000:
      break
    for v in G[p*j]:
      if uf.same(u,v):
        continue
      f = 0
      r -= 1
      uf.unite(u,v)
  if f == 0:
    g = min(g,p)
  r -= f

ans = min((r-1)*g,r*2)
print(ans)