A088845 Multiply perfect numbers k for which the quotient sigma_5(k)/k = A001160(k)/k is nonintegral.

496, 523776, 23569920, 142990848, 275502900594021408, 622286506811515392, 71065075104190073088, 34384125938411324962897920, 41254809330254618094796800000, 2360137508360958913826987704320, 11990459635691909131039408128000, 24862223033124742964111030747136

Offset

1,1

Links

Amiram Eldar, Table of n, a(n) for n = 1..369

Prog

(PARI) lista() = {v = readvec("b007691.txt"); for (i=1, #v, vi = v[i]; if (sigma(vi, 5) % vi, print1(vi, ", "); ); ); } \\ Michel Marcus, Dec 26 2013

Crossrefs

Cf. A007691, A001158, A001160, A066269, A088843, A088844.

Sequence in context: A160472 A028512 A337952 * A013685 A108157 A062676

Adjacent sequences: A088842 A088843 A088844 * A088846 A088847 A088848

Keyword

nonn

Author

Labos Elemer, Nov 05 2003

Extensions

Extended using A007691 b-file by Michel Marcus, Dec 26 2013

Data corrected by Amiram Eldar, May 09 2024

Status

approved