In number theory, a perfect number is a positive integer that is equal to the sum of its proper positive divisors, that is, the sum of its positive divisors excluding the number itself (also known as its aliquot sum). Equivalently, a perfect number is a number that is half the sum of all of its positive divisors (including itself). Write a Python3 program to check if a user-entered number is a perfect number or not. Use exception handling to handle invalid inputs.

Explanation:

def the_perfect(n):

  try: #exception handling if n is a negative number

       n > 0

   except: #return -1 if the error is reached

       return -1

  else:

        total = 0

        for i in range(1, n): #for loop from 1 to the target number

           if n % i == 0:

               total += i

   return total == n  #should return true if number is perfect number

print(perfect_number(8))

answer; always; never;

solution:

the right option is a

to adding   a new row to a table we   have to do process last table cell and pressing tab.

this is the process to add new row in the cell:

* to add a row below the cell, click insert below in the rows and columns group.

thus this is the required right answer.