What is perfect number?

Question

What is perfect and strong number?

Answer 1

Abhishek Kushwaha Please,
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Answer 2

▪What is a perfect number? How do you find them? How many are there?
http://mathforum.org/dr.math/faq/faq.perfect.html

Answer 3

Perfect numbers:
https://www.sololearn.com/learn/4646/

Strong numbers:
https://www.geeksforgeeks.org/program-to-check-strong-number/