|
|
A218406
|
|
Numbers k for which sigma(k)/k - 1/5 is an integer.
|
|
5
|
|
|
5, 420, 7440, 8190, 18600, 121920, 131040, 95472000, 102136320, 197308800, 433305600, 503255040, 71271827200, 91967616000, 128848035840, 190066406400, 287879454720, 354560976000, 799959888000, 2061580369920, 2208930048000, 100368143884800, 341546502528000
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
Note that there are no terms here with abundancy 11/5 (k=2). - Michel Marcus, Jun 26 2013
|
|
LINKS
|
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|