Exercise $2$

Develop a program to check whether a given number is cool or not.

A cool number is a number in which the count of its proper positive divisors including the number itself is even. For example:

$8$ is a cool number because its proper positive divisors are $1,2,4,$ and $8,$ totaling $4$ divisors, which is even.

$9$ is not a cool number because its proper positive divisors are $1,3,$ and $9,$ totaling $3$ divisors, which is not even.

Sample Input$/$Output $1$

Enter a number: $8$

$8$ is a cool number

Sample Input$/$Output $2$

Enter a number: $9$

$9$ is not a cool number