Properties based on the sum-of-divisors function s(n), including perfect and multiperfect numbers, aliquot sequences, amicable pairs and sociable chains.
Subcategories 1
Sites 9
Loading new listings for you to review...
- Aliquot Sequences Juan L. Varona's work on aliquot sequences examines sequences with start values up to 10000, and traces them to large composite values.
- Perfect Numbers A detailed history of the quest for perfect numbers, from Euclid to their present-day Mersenne discoveries.
- Aliquot Sequences Results and software from Paul Zimmermann, addressing the Catalan Conjecture and working on the difficult "Lehmer Five" sequences.
- Amicable Numbers Observations on amicable pairs and their distribution, including Harshad and Happy Amicable pairs.
- Multiply Perfect Numbers Up-to-date information on multiperfect numbers and searchable database maintained by Achim Flammenkamp.
- Aliquot Sequences with initial term up to 10,000, by Christophe Clavier.
- Perfect Number - from MathWorld Definitions and references.
- Aliquot Sequences Aliquot sequences arise in iterating the sum-of-divisors function s. Bosma has calculated tables up to start value 50,000 and 80 digits.
- Aliquot Sequences Statistics by Wolfgang Creyaufmueller, including many tables and links to factoring sites and software.