#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for(int i=a;i<b;i++)
#define INF INT_MAX/2
#define rrep(i,a,b) for(int i=a;i>=b;i--)

typedef vector<int> vi;
typedef long long ll;

vector<bool> primes;
void make_primes(int n)
{
	primes.resize(n + 1, true);
	primes[0] = primes[1] = false;
	rep(i, 2, sqrt(n))
	{
		if (primes[i])
		{
			for (int j = 0; i * (j + 2) < n; j++)
				primes[i * (j + 2)] = false;
		}
	}
}

int main()
{
	int N; cin >> N;
	vi A(N); rep(i, 0, N) cin >> A[i];

	make_primes(100);

	rep(i, 2, 100) if (primes[i])
	{
		bool ok = true;
		while (ok)
		{
			rep(j, 0, N) if (A[j] % i != 0) ok = false;
			if (ok)
			{
				rep(j, 0, N) A[j] /= i;
			}
		}
	}

	int ans = 0;
	rep(i, 0, N) ans += A[i];
	cout << ans << endl;
}