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)

x = gets.split(" ").map{|s| s.to_i}
c = 0
for i in x[0]..x[1] do
  c += 1 if x[2] % i == 0
end
puts c