Author/Authors :
Jean-Marie De Koninck، نويسنده , , Florian Luca، نويسنده ,
Abstract :
For each positive integer j, let βj(n):=∑pnpj. Given a fixed positive integer k, we show that there are infinitely many positive integers n having at least two distinct prime factors and such that βj(n)n for each jset membership, variant{1,2,…,k}.