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A033833 Highly factorable numbers: numbers with a record number of proper factorizations. 5
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 * A045783 A261650 A178731

Adjacent sequences:  A033830 A033831 A033832 * A033834 A033835 A033836

KEYWORD

nonn

AUTHOR

Jeff Burch

STATUS

approved

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Last modified June 26 02:24 EDT 2017. Contains 288749 sequences.