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;

namespace _3_D {
    class Program {
        static void Main (string[] args) {
            var input = Console.ReadLine ().Split ();
            var a = Convert.ToInt32 (input[0]);
            var b = Convert.ToInt32 (input[1]);
            var c = Convert.ToInt32 (input[2]);

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