# include <stdio.h>
int x,y,r,d,k,i,z;
int main ()
{
freopen ("pascal.in","r",stdin);
freopen ("pascal.out","w",stdout);
scanf ("%i",&r);
scanf ("%i",&d);
k=0;
if (r%d==0)
k=k+2;
y=r;
for (i=2;i<=r/2;i++)
{
z=r-i+1;

x=(z*y)/i;
if (x%d==0)
k=k+2;
y=x;
}
if (r%2==0)
if (y%d==0)
k--;
printf ("%li",k);
return 0;
}