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.chomp.split("\s")
a, b, c = input[0].to_i, input[1].to_i, input[2].to_i

# bがcより大きい場合、bをcにする（cにはb以上の約数はない）
if b > c then b = c
end

#カウント
count = 0
for i in a..b
	if c % i == 0 then count += 1
	end
end

puts count