The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A006532

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Numbers whose sum of divisors is a square.
(history; published version)

#80 by Charles R Greathouse IV at Thu Sep 08 08:44:35 EDT 2022

PROG

(MAGMA) [n: n in [1..2000] | IsSquare(&+(Divisors(n)))]; // Vincenzo Librandi, May 31 2015

Discussion

Thu Sep 08

08:44

OEIS Server: https://oeis.org/edit/global/2944

#79 by Alois P. Heinz at Fri Jun 18 17:32:01 EDT 2021

STATUS

proposed

#78 by Jon E. Schoenfield at Fri Jun 18 17:31:24 EDT 2021

STATUS

editing

#77 by Jon E. Schoenfield at Fri Jun 18 17:31:22 EDT 2021

NAME

Numbers n such that sum of divisors of n is a square.

STATUS

approved

#76 by Peter Luschny at Sun Oct 15 13:19:29 EDT 2017

STATUS

proposed

#75 by Robert Israel at Sun Oct 15 12:42:57 EDT 2017

STATUS

editing

#74 by Robert Israel at Sun Oct 15 12:09:16 EDT 2017

COMMENTS

STATUS

approved

#73 by N. J. A. Sloane at Sat Aug 12 11:43:12 EDT 2017

STATUS

editing

#72 by N. J. A. Sloane at Sat Aug 12 11:43:04 EDT 2017

LINKS

J. Meeus & N. J. A. Sloane, <a href="/A006532/a006532.pdf">Correspondence, 1974-1975</a>

N. J. A. Sloane, <a href="/A006532/a006532_1.pdf">TITLE FOR LINK</a>

STATUS

approved

#71 by N. J. A. Sloane at Sat Aug 12 11:28:32 EDT 2017

STATUS

editing