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A033833 Highly factorable numbers: numbers with a record number of proper factorizations. 10
1, 4, 8, 12, 16, 24, 36, 48, 72, 96, 120, 144, 192, 216, 240, 288, 360, 432, 480, 576, 720, 960, 1080, 1152, 1440, 2160, 2880, 4320, 5040, 5760, 7200, 8640, 10080, 11520, 12960, 14400, 15120, 17280, 20160, 25920, 28800, 30240, 34560 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Indices of RECORDS in A028422 or A001055.

LINKS

E. R. Canfield et al., Table of n, a(n) for n=1..118

E. R. Canfield, P. Erdős, C. Pomerance, On a problem of Oppenheim concerning Factorisatio Numerorum, J. Number Theory 17 (1983) 1-28, Table 1, column "n".

CROSSREFS

Cf. A028422, A033834, A272691 (number of factorizations).

Sequence in context: A071385 A066192 A097981 * A291834 A291928 A045783

Adjacent sequences:  A033830 A033831 A033832 * A033834 A033835 A033836

KEYWORD

nonn

AUTHOR

Jeff Burch

STATUS

approved

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Last modified September 26 15:27 EDT 2017. Contains 292531 sequences.