A100890 Imaginary part of multiplier m of the Gaussian multiperfect number associated with the real part A100889(n).

0, -1, 2, 2, 3, 2, -1, -2, 2, -3, -1, -3, -1, -4, 2, 0, -1, -2, 0, 1, -4, 0, 3, -3, 1, 0, 0, 0, 4, 3, 3, 0, 1, 0, 0, 4, 0, 4, -4, 3, -1

Offset

1,3

Comments

Let the Gaussian integer z = A100884(n)+i*A100885(n). Then a(n) = Im(m) = Im( sigma(z)/z).

Links

Table of n, a(n) for n=1..41.

Crossrefs

Cf. A100884, A100885, A100889.

Sequence in context: A353932 A368798 A253141 * A262815 A076494 A217721

Adjacent sequences: A100887 A100888 A100889 * A100891 A100892 A100893

Keyword

sign,more

Author

Yasutoshi Kohmoto

Extensions

Edited, all values replaced by R. J. Mathar, Mar 12 2010

a(10)-a(41) from Amiram Eldar, Feb 10 2020

Status

approved