|
|
A218408
|
|
Numbers k for which sigma(k)/k - 3/5 is an integer.
|
|
4
|
|
|
15, 90, 3360, 2618880, 5059200, 4873497600, 7381524480, 27990144000, 57846297600, 4609292688000, 4440104532864000, 106644933787392000, 164741543366400000, 454310107592140800, 1084892424295680000, 1160492902900531200, 10932800808939609600
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|