#include <fstream>
using namespace std;

ifstream in ("indep.in");
ofstream out("indep.out");
int const N=505;
int const M=1005;
int n,v[N],num[M][202];

inline int cmmdc(int a, int b)
{
    if (b == 0) return a;
    return cmmdc(b, a % b);
}
void add (int pos1, int pos2)
{
    int i,t=0;
    for(i=1;i<=num[pos1][0] || i<=num[pos2][0] || t; i++, t/=10)
        num[pos1][i]=(t+=num[pos1][i]+num[pos2][i])%10;
    num[pos1][0]=i-1;
}
int main()
{
    num[0][0] = num[0][1] = 1;
    in>>n;
    //for(int i=1;i<=n;i++)
        //in>>v[i];
    for (int i = 1; i <= n; ++i)
    {
        in>>v;
        for (int j = 1; j <= 1000; ++j)
            add(cmmdc(v,j),j);   //num[cmmdc(V[i],j)]+=num[j];
            //add(cmmdc(v[i],j),j);   //num[cmmdc(V[i],j)]+=num[j];
        add(v,0);    //num[V[i]]+=num[0];
        //add(v[i],0);    //num[V[i]]+=num[0];
    }
    if (num[1][0] == 0) num[1][0] = 1;
    for(int i=num[1][0];i>=1;--i)
        out<<num[1][i];
    in.close();
    out.close();
    return 0;
}