Problems
Smooth Divisors
Smooth Divisors
The positive integer $m$ is called a smooth divisor of $n$ if the quotient and remainder of dividing $n$ by $m$ are equal. The positive integer $n$ is given. Find the number of its smooth divisors.
\InputFile
The positive integer $n\:(1 \le n \le 10^6)$.
\OutputFile
Print the required number of smooth divisors for number $n$.
Input example #1
20
Output example #1
2