var n,q,i,j,p,m,r:longint;f,g:text;
begin
assign(f,'fractii.in');reset(f);
assign(g,'fractii.out');rewrite(g);
readln(f,n);
q:=0;
for i:=1 to n do begin
for j:=1 to n do begin
if i mod j=0 then begin
m:=i;
p:=j;
if m>p then r:=m mod p
       else r:=p mod m;
while r<>0 do begin
m:=p;
p:=r;
if m>p then r:=m mod p
       else r:=p mod m;
       end;
if p=1 then inc(q);end
       else inc(q);
end;
end;
writeln(g,q);
close(f);
close(g);
end.