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 C# (judge verdict: Accepted)

using System;

class Program
{
    static void Main()
    {
        //３つの整数 a、b、c を読み込み、a から b までの整数の中に、
        //c の約数がいくつあるかを求めるプログラムを作成してください。
        var line = Console.ReadLine().Split(' ');
        var a = int.Parse(line[0]);
        var b = int.Parse(line[1]);
        var c = int.Parse(line[2]);
        var counter = 0;

        for (var i = a; i <= b; i++)
        {
            if (c % i == 0) counter++;
        }
 Console.WriteLine(counter);
    }
}