Problem:
How Many Divisors?

Write a program which reads three integers a, b and c, and prints the number of divisors of c between a and b.

Input

Three integers a, b and c are given in a line separated by a single space.

Output

Print the number of divisors in a line.

Constraints

1 ≤ a, b, c ≤ 10000

a ≤ b

Sample Input 1

5 14 80

Sample Output 1

3

Solution in PHP (judge verdict: Accepted)

<?php
    $s = trim(fgets(STDIN));
    $s = explode(' ', $s);
$count = 0;
for ($i = $s[0]; $i <= $s[1]; $i++) {
    if ($s[2] % $i == 0) {
         $count++;
    }
}
echo $count . PHP_EOL;
exit;
?>