#include <fstream>
#include <algorithm>

using namespace std;

inline int cmmdc(int a, int b)
{
    if (b == 0) return a;
    return cmmdc(b, a % b);
}

int N, V[502];
int num[1002][102];

void add(int pos1, int pos2)
{
    num[pos1][0] = max(num[pos1][0], num[pos2][0]);

    for (int i = 1; i <= num[pos1][0]; ++i)
    {
        num[pos1][i] += num[pos2][i];
        if (num[pos1][i] >= 10)
        {
            num[pos1][i + 1] += num[pos1][i] / 10;
            num[pos1][i] %= 10;
            num[pos1][0] += (i == num[pos1][0]);
        }
    }
}
void dub(int pos)
{
    for (int i = 1; i <= num[pos][0]; ++i)
        num[pos][i] *= 2;
    for (int i = 1; i <= num[pos][0]; ++i)
        if (num[pos][i] >= 10)
        {
            num[pos][i + 1] += num[pos][i] / 10;
            num[pos][i] %= 10;
            num[pos][0] += (i == num[pos][0]);
        }
}

int main()
{
    ifstream fin("indep.in");
    ofstream fout("indep.out");

    num[0][0] = num[0][1] = 1;

    fin >> N;
    for (int i = 1; i <= N; ++i)
        fin >> V[i];

    for (int i = 1; i <= N; ++i)
    {
        for (int j = 1; j <= 13; ++j)
        {
            if (cmmdc(V[i], j) == j) dub(j);
            else                     add(cmmdc(V[i], j), j);
        }
        add(V[i], 0);
    }

    for (int i = num[1][0]; i >= 1; --i)
        fout << num[1][i];

    fin.close();
    fout.close();
}