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

$stdin = preg_split('/ /', trim(fgets(STDIN)));
$a = intval($stdin[0]);
$b = intval($stdin[1]);
$c = intval($stdin[2]);
$count = 0;

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

print("{$count}\n");