OFFSET
1,1
COMMENTS
See A102531 for the real part.
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..76
MATHEMATICA
lst={}; nn=1000; Do[z=a+b*I; If[Abs[z]<=nn && Abs[(DivisorSigma[1, z]-z)] == Abs[z], AppendTo[lst, {Abs[z]^2, z}]], {a, nn}, {b, nn}]; Im[Transpose[Sort[lst]][[2]]]
CROSSREFS
KEYWORD
nonn
AUTHOR
T. D. Noe, Jan 13 2005
EXTENSIONS
a(22)-a(45) from Amiram Eldar, Feb 10 2020
STATUS
approved