Problem 44748. Amicable numbers
By solving this problem, you will make progress in the following group(s)
Magic Numbers IV
- 20 Problems
- 24 Finishers
Number theory
- 44 Problems
- 21 Finishers
Test whether two numbers are amicable, meaning that the sum of the proper divisors of each number is equal to the other number.
Example: 220 and 284 are amicable numbers because the proper divisors of 220 are 1,2,4,5,10,11,20,22,44,55,110 and their sum is 284, while the proper divisors of 284 are 1,2,4,71,142 and their sum is 220.
Solution Stats
Problem Comments
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4 Comments
I think it's because divisors is part of a toolbox, I did not set it up not to allow it.
@cdeliu I have solved another problem in Community and I still am unable to see the best solution. Could you help to give advice on this.
If divisors function is not allowed, you should somehow generate these divisors. The best solution uses the mod function.
Solution Comments
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