Linear-values conjecture for σ⁺: σ⁺(n) = 2p − q for infinitely many pairs
Prove that for each prime q ≥ 3 there exist infinitely many pairs (p,n), with p prime, such that σ⁺(n)=2p−q, where σ⁺(n)=∏_{p'\mid n}(σ(p'^{v_{p'}(n)})+1).
References
Conjecture 1: For each prime $q \geq 3$, there exist infinitely many pairs $(p, n)$ such that $\sigma+(n) = 2p - q$, where $p$ is a prime number.
— Divisibility and Sequence Properties of $σ^+$ and $\varphi^+$
(2508.11660 - Mandal, 6 Aug 2025) in Section 2, Main Results (Conjecture 1)