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 A324184 a(n) = sigma(A163511(n)). 10
 1, 3, 7, 4, 15, 13, 12, 6, 31, 40, 39, 31, 28, 24, 18, 8, 63, 121, 120, 156, 91, 124, 93, 57, 60, 78, 72, 48, 42, 32, 24, 12, 127, 364, 363, 781, 280, 624, 468, 400, 195, 403, 372, 342, 217, 228, 171, 133, 124, 240, 234, 248, 168, 192, 144, 96, 90, 104, 96, 72, 56, 48, 36, 14, 255, 1093, 1092, 3906, 847, 3124, 2343, 2801, 600 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Antti Karttunen, Table of n, a(n) for n = 0..16383 Antti Karttunen, Data supplement: n, a(n) computed for n = 0..65537 FORMULA a(n) = A000203(A163511(n)). For n >= 1, a(n) = A324054(A054429(n)). PROG (PARI) A324184(n) = if(!n, 1, my(p=2, mp=p*p, m=1); while(n>1, if(n%2, p=nextprime(1+p); mp = p*p, if((2==n)||!(n%4), mp *= p, m *= (mp-1)/(p-1))); n >>= 1); (m*(mp-1)/(p-1))); (PARI) A163511(n) = if(!n, 1, my(p=2, t=1); while(n>1, if(!(n%2), (t*=p), p=nextprime(p+1)); n >>= 1); (t*p)); A324184(n) = sigma(A163511(n)); CROSSREFS Cf. A000203, A054429, A163511, A324054, A324183, A324185, A324186, A324187, A324188, A324189. Sequence in context: A231463 A218616 A323173 * A114691 A023639 A291534 Adjacent sequences: A324181 A324182 A324183 * A324185 A324186 A324187 KEYWORD nonn AUTHOR Antti Karttunen, Feb 17 2019 STATUS approved

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Last modified May 29 11:46 EDT 2023. Contains 363042 sequences. (Running on oeis4.)