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
fscanf(STDIN,"%d %d %d",$a,$b,$c);
$ans = 0;
for($i = $a;$i <= $b;$i++){
    if($c % $i == 0){
        $ans++;
    }
}
echo $ans . PHP_EOL;