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#include <fstream>
#include <algorithm>
using namespace std;
ifstream fin ("indep.in");
ofstream fout("indep.out");
int n,i,j,m,t,x;
int D[1003][1003],V[503];
int one[1005]={1,1};
void adunare(int a[1003],int b[1003])
{
a[0]=max(a[0],b[0]);
int t=0;
for(int i=1;i<=a[0];i++)
{
a[i]+=b[i]+t;
t=a[i]/10;
a[i]%=10;
}
while(t)
{
a[++a[0]]=t%10;
t/=10;
}
}
void afis(int a[1003])
{
for(int i=a[0];i;i--)
fout<<a[i];
}
int main()
{
fin>>n;
for(i=1;i<=n;i++)
{
fin>>x;
for(j=1;j<=1000;j++)
if(D[j][0]!=1||D[j][1])
{
adunare(D[__gcd(x,j)],D[j]);
///D[t][__gcd(V[i],j)]+=D[1-t][j];
}
adunare(D[x],one);
}
afis(D[1]);
if(!D[1][0])
fout<<0;
return 0;
}