class Factorization():
    def __init__(self, N):
        self.L = list(range(N + 1))
        for i in range(2, N + 1):
            if i != self.L[i]:
                continue
            for j in range(2 * i, N + 1, i):
                self.L[j] = i

    def get(self, n):
        if n <= 1:
            return []
        D = []
        while n != 1:
            cnt = 0
            now = self.L[n]
            while n % now == 0:
                cnt += 1
                n //= now
            D.append((now, cnt))
        return D
    
class UnionFind():
    def __init__(self, n=1):
        self.par = [i for i in range(n)]
        self.rank = [0 for _ in range(n)]
        self.size = [1 for _ in range(n)]

    def find(self, x):
        if self.par[x] == x:
            return x
        else:
            self.par[x] = self.find(self.par[x])
            return self.par[x]

    def union(self, x, y):
        x = self.find(x)
        y = self.find(y)
        if x != y:
            if self.rank[x] < self.rank[y]:
                x, y = y, x
            if self.rank[x] == self.rank[y]:
                self.rank[x] += 1
            self.par[y] = x
            self.size[x] += self.size[y]

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

    def get_size(self, x):
        x = self.find(x)
        return self.size[x]


N = int(input())
A = list(map(int, input().split()))
M = 2 * 10 ** 5 + 5
F = Factorization(M)
now = N
from collections import *
D = defaultdict(int)
U = UnionFind(3*10**5+5)
mi = 10 ** 18
for i, a in enumerate(A):
    for k, v in F.get(a):
        mi = min(mi, k)
        if k not in D:
            D[k] = now
            now += 1
        U.union(i, D[k])
            
S = set()
for i in range(N):
    S.add(U.find(i))
    
if mi == 2:
    print((len(S) - 1) * 2)
else:
    print(min(2 * len(S), mi * (len(S) - 1)))