Some modular considerations regarding odd perfect numbers - Part II

被引:1
|
作者
Dris, Jose Arnaldo Bebita [1 ]
San Diego, Immanuel Tobias [2 ]
机构
[1] De La Salle Univ, Math Dept, Manila 1004, Philippines
[2] Trinity Univ Asia, Dept Math & Phys Sci, Quezon City 1102, Philippines
关键词
Sum of divisors; Sum of aliquot divisors; Deficiency; Odd perfect number; Special prime; CONJECTURE;
D O I
10.7546/nntdm.2020.26.3.8-24
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
In this article, we consider the various possibilities for p and k modulo 16, and show conditions under which the respective congruence classes for sigma(m(2)) (modulo 8) are attained, if p(k)m(2) is an odd perfect number with special prime p. We prove that 1. sigma(m(2)) equivalent to 1 (mod 8) holds only if p + k equivalent to 2 (mod 16). 2. sigma(m(2)) equivalent to 3 (mod 8) holds only if p k equivalent to 4 (mod 16). 3. sigma(m(2)) equivalent to 5 (mod 8) holds only if p + k equivalent to 10 (mod 16). 4. sigma(m(2)) equivalent to 7 (mod 8) holds only if p k equivalent to 4 (mod 16). We express gcd(m(2); sigma(m(2))) as a linear combination of m(2) and sigma(m(2)). We also consider some applications under the assumption that sigma(m(2))/p(k) is a square. Lastly, we prove a last-minute conjecture under this hypothesis.
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页码:8 / 24
页数:17
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