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

list($a, $b, $c) = array_map("intval", explode(' ', trim(fgets(STDIN))));

$cnt = 0;

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

echo "{$cnt}\n";