CHALLENGE: AMICABLE NUMBER

Question

amicale numbers are two different numbers so related that the sum of the proper divisor of each is equal to the other number
Ex 220 and 284
make a programm that list all the amicable numbers lower than a billion

Answer 1

mine https://code.sololearn.com/WuDPQxN9udZ4/?ref=app

from https://www.sololearn.com/Discuss/648571/?ref=app

Answer 2

https://code.sololearn.com/c6Sgb7FyDMdC/?ref=app

Answer 3

Similar to challenge by @Luca
Friendly numbers
Here's mine
https://code.sololearn.com/ci7i6EjNjZ7o/?ref=app

Answer 4

https://code.sololearn.com/c7JanWTaQtoW/?ref=app