#!/usr/bin/env perl

use strict;
use warnings;

my $n = <>; chomp $n;
my $c = 0;
my $nn = int(sqrt($n));
my $check = $nn * $nn == $n ? 1 : 0;
for (my $i = 1; $i < $nn + 1 - $check; $i++) {
  if ($n % $i == 0) {
    $c++;
  }
}
print $c * 2 + $check . "\n";