Subdirectories of Perfect Numbers:
Websites on Perfect Numbers: Aliquot Sequences with initial term up to 10,000, by Christophe Clavier. Aliquot Sequences Statistics by Wolfgang Creyaufmueller, including many tables and links to factoring sites and software. Aliquot Sequences Statistics by Wolfgang Creyaufmueller, including many tables and links to factoring sites and software. Aliquot Sequences Statistics by Wolfgang Creyaufmueller, including many tables and links to factoring sites and software. Aliquot Sequences Statistics by Wolfgang Creyaufmueller, including many tables and links to factoring sites and software. Amicable Numbers Observations on amicable pairs and their distribution, including Harshad and Happy Amicable pairs. Cubes of Perfection From Ivars Peterson's MathTrek column in MAA Online. Curious relationships satisfied by perfect numbers. Multiply Perfect Numbers Up-to-date information on multiperfect numbers and searchable database maintained by Achim Flammenkamp. On a Generalization of Perfect Numbers J. L. Pe introduces perfect numbers relative to an arithmetical function f. Under this scheme, the usual perfect numbers are just one among many species of "f-perfect numbers". Several open problems and examples of perfect number sets are given, as well as a few f-amicable pairs. Perfect Number - from MathWorld Definitions and references. Perfect Numbers Harry J. Smith's pages of the mathematics behind perfect numbers, aliquot sequences and Mersenne numbers. Includes program listings and e-mail archives. Perfect Numbers Harry J. Smith's pages of the mathematics behind perfect numbers, aliquot sequences and Mersenne numbers. Includes program listings and e-mail archives. Tables of Aliquot Cycles Data for various kinds up to 10^12, including unitary, infinitary, exponential, augmented and reduced varieties.
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