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 A180464 a(n) is the smallest number m such that sigma(m)=46^n, or 0 if m does not exist. 6
 1, 0, 0, 0, 0, 180217597, 6217507317, 325975026477, 15034820907837, 919684211139697, 31808042757482763, 1463508270300620883, 58746435953696315769, 2709539295335742607689, 138000408890542031957601, 5718143312090439006662949, 263735727094699893912217269 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,6 LINKS Max Alekseyev, Table of n, a(n) for n = 0..100 EXAMPLE a(5)=180217597=7*25745371 and sigma(180217597)=(2^3)*(2^2*23^5)=2^5*23^5 and 180217597 is the smallest such number. CROSSREFS Cf. A048251, A110077, A180265, A180460, A180461, A180462, A180463. Sequence in context: A228760 A204529 A211239 * A179586 A234384 A226589 Adjacent sequences: A180461 A180462 A180463 * A180465 A180466 A180467 KEYWORD nonn AUTHOR Walter Kehowski, Sep 06 2010 EXTENSIONS Terms a(15) onward from Max Alekseyev, Mar 03 2014 STATUS approved

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Last modified June 4 12:12 EDT 2023. Contains 363128 sequences. (Running on oeis4.)