Summary

DescriptionDivisor square.svg	English: Graph of the sigma function :${\displaystyle \sigma _{2}(n)=\sum _{d|n}d^{2}}$ in the range of ${\displaystyle 1\leq n\leq 250}$ Русский: График сигма-функции ${\displaystyle \sigma _{2}(n)=\sum _{d|n}d^{2}}$ в области ${\displaystyle 1\leq n\leq 250}$
Date	13 September 2006
Source	Own work
Author	Linas
SVG development InfoField	The SVG code is valid.   This vector image was created with an unknown SVG tool.

Licensing

​Wikipedia (English) user Linas, the copyright holder of this work, hereby publishes it under the following license:

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue

Original upload log

• 13:37, 28 February 2013 Jumpow uploaded "Файл:Divisor square.svg" (Graph of the sigma function :${\displaystyle \sigma _{2}(n)=\sum _{d|n}d^{2}}$ in the range of ${\displaystyle 1\leq n\leq 250}$)

• 2006-09-13 03:59 Linas 600×480× (7854 bytes) == Summary == Graph of the [[:en:divisor function|sigma function]] :<math>\sigma_2(n)=\sum_{d|n} d^2</math> in the range of <math>1\le n \le 250</math>