Erdős problem 48 · problems.science

Are there infinitely many integers $n, m$ such that $ϕ(n) = σ(m)$ ?

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Technical detailsExact roots, source, and retained record identifiers

Problem row: sha256:e3875dc60fee270f969d1114c69fac8210fa601fe5e750946d4a3ae072f1bf18
Metadata: sha256:91f32c01037ac2b1cfcb6f506c8288d4299f8118c030542b7953641ff9410ac3
Observation: sha256:8c823d621b7e1256c8e47c60a5f1c54c016a5507e6f27b2bab537f6f5f232067
Content: sha256:81151bd35afd412f15c1a002d0cc4c88d924c2d0bf42ee9c96c14128090b611f

Repository: sha256:a956b84c437202e5a02cc9e036a621bd14a302b34a75758115730bdbb77c52a4
Projection: sha256:c9d14c459c518937e758918b5897dc3b22f1a55f07739afe99502f5b046c907a
Source commit: 2415f78e850aeee50afdca525c6f2e0ea606f207