LE Mao-hua
Abstract
For any positive integer n,let δ(n) denote the sum of distinct divisors of n.This paper proved that there exist infinitely many positive integers n satisfying δ(n)δ(n-1)δ(n+1).
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For any positive integer n,let δ(n) denote the sum of distinct divisors of n.This paper proved that there exist infinitely many positive integers n satisfying δ(n)δ(n-1)δ(n+1).
Key concepts: Arithmetic, Mathematics, Function (biology), Arithmetic function, Algebra over a field, Computer science, Discrete mathematics, Pure mathematics