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;
using System.Linq;

namespace ITP1_3
{
    class Program
    {
        static void Main()
        {
            int[] i = Console.ReadLine().Split(' ').Select(int.Parse).ToArray();
            int a = i[0], b = i[1] - a + 1, c = i[2];
            Console.Write("{0}\n", Enumerable.Range(a, b).Where(e => c % e == 0).Count());
        }
    }
}