Erdős problem 410Let σ1(n)=σ(n)σ_1(n) = σ(n), the sum of divisors function, and σk(n)=σ(σk−1(n))σ_k(n) = σ(σ_{k-1}(n)).WorkspaceContinue locallyOpen sourceSign in to contributeOpen this exact Problem, source revision, and authority Repository in Workbench. This handoff does not clone, switch, upload, or execute anything.FilesErdős problem 4102 retained source recordsCanvaspublic previewSource#410→ResultNone→Checks0