English

Finite connected components of the aliquot graph

Number Theory 2017-06-16 v2

Abstract

Conditional on a strong form of the Goldbach conjecture, we determine all finite connected components of the aliquot graph containing a number less than 10910^9, as well as those containing an amicable pair below 101410^{14} or one of the known perfect or sociable cycles below 101710^{17}. Along the way we develop a fast algorithm for computing the inverse image of an even number under the sum-of-proper-divisors function.

Keywords

Cite

@article{arxiv.1610.07471,
  title  = {Finite connected components of the aliquot graph},
  author = {Andrew R. Booker},
  journal= {arXiv preprint arXiv:1610.07471},
  year   = {2017}
}

Comments

10 pages, to appear in Mathematics of Computation