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  • $\begingroup$ Note that twelve of the entries in the list have only 10 divisors. They of the form $2^4\cdot p$ where $p$ runs over the primes between $17$ and $61$ (one might speculate that they are the primes between $2^4$ and $2^6$). $\endgroup$
    – Greg Martin
    Commented Aug 28, 2023 at 2:11
  • $\begingroup$ I don't underatand what you mean by "don't divide the product of their first half of factors (minus one)"; I haven't been able to recreate your results. $\endgroup$
    – Greg Martin
    Commented Aug 28, 2023 at 2:13
  • $\begingroup$ Apologies. I flubbed in explaining it, and have edited the answer to include the code and fix the explanation. $\endgroup$
    – yanjunk
    Commented Aug 28, 2023 at 2:57
  • $\begingroup$ @GregMartin I forgot to mention you in my reply. Hopefully this isn't considered rude (to make a comment solely to mention you). $\endgroup$
    – yanjunk
    Commented Aug 28, 2023 at 3:17
  • $\begingroup$ Btw you can use sympy for simple number theory functions. $\endgroup$
    – qwr
    Commented Aug 28, 2023 at 21:18