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: Wrong Answer)

<?php

$stdin = trim(fgets(STDIN));
$number = explode(" ", $stdin);

$a = intval($number[0]);
$b = intval($number[1]);
$c = intval($number[2]);

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