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 AizuOnline
{
    internal class Program
    {
        private static void Main(string[] args)
        {
            var x = Console.ReadLine().Split(' ');
            var a = Convert.ToInt32(x[0]);
            var b = Convert.ToInt32(x[1]);
            var c = Convert.ToInt32(x[2]);

            var count = 0;
            for (int i = a; i <= b; i++)
            {
                if (c % i == 0)
                {
                    count++;
                }
            }

            Console.WriteLine(count);
            Console.ReadLine();
        }
    }
}