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
$input = explode(' ', fgets(STDIN));
$a = intval($input[0]);
$b = intval($input[1]);
$c = intval($input[2]);

$cou = 0;

for($i=$a; $i <= $b; $i++) {
	if($c % $i === 0)
		$cou++;
}

echo "$cou\n";