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A020476 Numbers n such that sum of divisors of n^3 is a cube. 0
1, 30154214043975990969, 76630991932799573643, 3590918978816938469301573291605, 68804810614900760202830061602802, 527113576787083306927808065765554478755087 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..6.

PROG

(PARI) isok(n) = ispower(sigma(n^3), 3); \\ Michel Marcus, Jul 19 2017

CROSSREFS

Sequence in context: A132902 A288290 A219321 * A231562 A257370 A104283

Adjacent sequences:  A020473 A020474 A020475 * A020477 A020478 A020479

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified October 20 12:34 EDT 2018. Contains 316379 sequences. (Running on oeis4.)