#include<fstream.h>
int n, nr=0,i,j,h;
int main()
{ifstream f("fractii.in");
ofstream g("fractii.out");
f>>n;
f.close();
for (i=1;i<=n;i++)
{for (j=1;j<=n;j++)
{
for (h=2;h<=i;h++)
{if((i%h==0)&&(j%h==0))  nr=nr;
else nr=nr+1;}}}
g<<nr;}