ssheep has ~N~ sheep. He wants to know how many positive numbers will divide into ~N~ without remainder. Can you help ssheep?

Input Specification

The first line will contain ~N\ (1 \le N \le 10^9)~.

Output Specification

The amount of positive numbers that divide ~N~.

Subtasks

Subtask 1 [30%]

~N \le 10^5~

Sutbask 2 [70%]

No further constraints.

Sample Input

10000

Sample Output

25

Explanation for Sample 1

The 25 numbers are: ~1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 2000, 2500, 5000, 10000~.