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 itself (also known as its aliquot sum). In other words, a perfect number is a number that is half of the sum of all its positive divisors (including itself). For example, 6 is a perfect number because 6 = (6 ∗ 1 ∗ 2 ∗ 3)/2 Make a Python3 program that checks all the numbers from 1 to 10000 whether the number is a perfect number or not, and if it is, writes it to a file named perfect.txt. (initially does not exist)