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A212608 Deficient numbers n having a companion m > n such that sigma(n)/n = sigma(m)/m. 2
135, 3375, 1485, 2295, 2565, 3105, 3915, 4185, 4995, 5535, 5805, 6345, 25137, 7155, 7965, 8235, 9045, 9585, 9855, 10665, 11205, 12015, 13095, 13635, 13905, 14445, 14715, 43875, 15255, 16335, 17145, 17685, 18495, 18765, 57375, 20115, 20385, 21195, 64125 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
These numbers are listed in the order that their companions were found. All these numbers appear to have only one companion, which appear in A212609.
LINKS
CROSSREFS
Cf. A211680 (pairs of deficient numbers).
Sequence in context: A061073 A195671 A332428 * A212611 A004005 A248009
KEYWORD
nonn
AUTHOR
T. D. Noe, May 23 2012
STATUS
approved

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Last modified August 30 15:13 EDT 2024. Contains 375545 sequences. (Running on oeis4.)