English

Solving the Odd Perfect Number Problem: Some New Approaches

Number Theory 2013-10-17 v2

Abstract

A conjecture predicting an injective and surjective mapping X=σ(pk)pk,Y=σ(m2)m2X = \displaystyle\frac{\sigma(p^k)}{p^k}, Y = \displaystyle\frac{\sigma(m^2)}{m^2} between OPNs N=pkm2N = {p^k}{m^2} (with Euler factor pkp^k) and rational points on the hyperbolic arc XY=2XY = 2 with 1<X<1.25<1.6<Y<21 < X < 1.25 < 1.6 < Y < 2 and 2.85<X+Y<32.85 < X + Y < 3, is disproved. We will show that if an OPN NN has the form above, then pk<2/3m2p^k < {2/3}{m^2}. We then give a somewhat weaker corollary to this last result (m2pk8m^2 - p^k \ge 8) and give possible improvements along these lines. We will also attempt to prove a conjectured improvement to pk<mp^k < m by observing that σ(pk)m1\displaystyle\frac{\sigma(p^k)}{m} \ne 1 and σ(pk)mσ(m)pk\displaystyle\frac{\sigma(p^k)}{m} \ne \displaystyle\frac{\sigma(m)}{p^k} in all cases. Lastly, we also prove the following generalization: If N=i=1rpiαiN = \displaystyle\prod_{i = 1}^{r}{{p_i}^{\alpha_i}} is the canonical factorization of an OPN NN, then σ(piαi)(2/3)Npiαi\displaystyle\sigma({p_i}^{\alpha_i}) \le \displaystyle(2/3)\displaystyle\frac{N}{{p_i}^{\alpha_i}} for all ii. This gives rise to the inequality N2r(1/3)(2/3)r1N^{2 - r} \le (1/3){(2/3)}^{r - 1}, which is true for all rr, where r=ω(N)r = \omega(N) is the number of distinct prime factors of NN.

Keywords

Cite

@article{arxiv.1206.1548,
  title  = {Solving the Odd Perfect Number Problem: Some New Approaches},
  author = {Jose Arnaldo B. Dris},
  journal= {arXiv preprint arXiv:1206.1548},
  year   = {2013}
}

Comments

3 pages, Electronic Proceedings of the 11th Science and Technology Congress, De La Salle University, Manila, Philippines, Sept. 22, 2009

R2 v1 2026-06-21T21:15:50.645Z