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 Ruby (judge verdict: Accepted)

input = gets.split(" ")
a, b, c = input[0].to_i, input[1].to_i, input[2].to_i
count = 0
a.upto(b) do |i|
    if c % i == 0; count += 1; end
end
puts count