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%I #19 Jul 07 2023 21:15:20
%S 32,384,1280,576,1536,384,1536,4194304,16777216,3538944,1769472,
%T 110592,221184,13824,6912,48318382080,9663676416,3538944,75497472,
%U 14155776,56623104,884736,55296,57982058496,3710851743744,37748736,695784701952,27648,27648,2654208
%N Number of divisors of n-th cyclic number.
%C Calculated with Dario Alpern's ECM.
%C Extended using factors of 10^(A001913(n)-1)-1, see Kamada link.
%H Max Alekseyev, <a href="/A087024/b087024.txt">Table of n, a(n) for n = 1..51</a> (first 42 terms from Ray Chandler)
%H Dario A. Alpern, <a href="https://www.alpertron.com.ar/ECM.HTM">Factorization using the Elliptic Curve Method</a>.
%H Makoto Kamada, <a href="https://stdkmd.net/nrr/repunit/">Factorizations of 11...11 (Repunit)</a>
%H Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/CyclicNumber.html">Cyclic Number</a>
%H Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/DivisorFunction.html">Divisor Function</a>
%F a(n) = A000005(A004042(n+1)).
%Y Cf. A001913, A087020, A087021, A087022, A087023, A087025, A087026.
%K nonn
%O 1,1
%A _Reinhard Zumkeller_, Jul 30 2003
%E a(12)-a(42) from _Ray Chandler_, Nov 16 2011
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