Perfect Numbers Factoring

• Amicable Numbers  - Explains distributions, observations and calculations of friendly numbers, with details on Harshad and Happy pairs.
• Catalan Conjecture - Aliquot Sequences  - Contains definition, tables, diagrams, databases and links. With factorization of integers and list of programs, projects and records.
• Christophe Clavier - Aliquot Sequences  - Carries out table on statistics and all open ending sequences.
• Cubes of Perfection  - Explains perfect number specified by Euclid's formula and used with different patterns.
• Juan L. Varona - Aliquot Sequences  - Explains calculation and functions of positive integer, perfect number, and status of sequences.
• Multiply Perfect Numbers  - Contains table on status and historical development of known MPN, and explanation of data and algebraic transformations.
• Paul Zimmermann - Aliquot Sequences  - Contains definition and investigation on sequences, with tools and table on current status.
• Perfect Number - Wolfram MathWorld  - Illustrates computation, definition and table with corresponding indices.
• Tables of Aliquot Cycles  - Presents table with various known cycles of amicable, sociable, and perfect numbers.
• Wieb Bosma - Aliquot Sequences  - Explains the Catalan-Dickson conjecture, related methods, and status summary of computation.