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)

op1,op2,op3=STDIN.gets.chomp.split.map{|v|v.to_i}
i=op1
result=0
until i>op2
        if op3%i==0 then
                result = result + 1
        end
        i=i+1
end
puts result