#include <stdio.h>

int n,v[501],a[1002][501],aux[2];

int cmmdc(int x,int y)
{
	int r;
	while(y)
	{
		r=x%y;
		x=y;
		y=r;
	}
	return x;
}

void suma(int A[], int B[])
{
      int i, t = 0;
	  if (!A[0] && !B[0])
		  return ;
      for (i=1; i<=A[0] || i<=B[0] || t; i++, t/=10)
              A[i] = (t += A[i] + B[i]) % 10;
      A[0] = i - 1;
}

int main()
{
	int i,j,t,n;
	freopen("indep.in","r",stdin);
	freopen("indep.out","w",stdout);
	
	scanf("%d",&n);
	for (i=1; i<=n; i++)
		scanf("%d",&v[i]);
	aux[0]=1; aux[1]=1;
	
	for (i=1; i<=n; i++)
	{
		for (j=1; j<=1000; j++)
		{
			t=cmmdc(v[i],j);
			suma(a[t],a[j]);
		}
		suma(a[v[i]],aux);
	}
	
	if (!a[1][0])
	{
		printf("0\n");
		return 0;
	}
	for (i=a[1][0]; i>=1; i--)
		printf("%d",a[1][i]);
	return 0;
}