Talk:Sum of divisors: Difference between revisions
→Depends on the algorithm you use...
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:: You will see, on the landing page, that Rosetta aims for contrastive ''insight'' – not for comprehensive coverage of homework questions :-) The scope for contrastive insight in the matter of divisors is already exhausted by the trivially different '''Proper divisors''' task. [[User:Hout|Hout]] ([[User talk:Hout|talk]]) 17:50, 20 December 2020 (UTC)
I think this task should be the main task
I think like factorial where we can find ton of task in Rosetta given the insight of factorial, we still have factorial because it is a must.▼
Check the literature to see how this task has inspired scientists.
▲I think like factorial where we can find
I think this task is like factorial. We shouldn't miss it.
PS: Please, how to print my user name and the when I write here? --Blek▼
== Depends on the algorithm you use... ==
I think what Blek is trying to say is that finding the sum of the proper divisors of a number isn't necessarily the same as finding the divisors and adding them up. There are other algorithms other than the "obvious" one. --[[User:Tigerofdarkness|Tigerofdarkness]] ([[User talk:Tigerofdarkness|talk]]) 19:29, 21 December 2020 (UTC)
: +1 for this. Perhaps the task should ask for more than the first 100 which is trivial, provides no insight, and can be done with any algorithm. Perhaps asking for the largest sum of divisors in the first 3 million positive integers would discourage trivial factorization algorithms.--[[User:Nigel Galloway|Nigel Galloway]] ([[User talk:Nigel Galloway|talk]]) 15:07, 9 March 2021 (UTC)
== how do I sign my name ? ==
▲PS: Please, how to print my user name and the time when I write here? --Blek
::You put <nowiki>--~~~~</nowiki> --[[User:Tigerofdarkness|Tigerofdarkness]] ([[User talk:Tigerofdarkness|talk]]) 18:35, 20 December 2020 (UTC)
::: Thanks --[[User:Blek|Blek]] ([[User talk:Blek|talk]])
:: What you can do is append to the end of your text, you can add: <big><big> <nowiki> -- ~~~~ </nowiki> </big></big>
:: the two minus signs followed by four tildes separate your name and timestamp from the preceding text. -- [[User:Gerard Schildberger|Gerard Schildberger]] ([[User talk:Gerard Schildberger|talk]]) 18:50, 20 December 2020 (UTC)
:: Don't forget to indent your replies with some number of leading colons, <u>one</u> more than the previous post. -- [[User:Gerard Schildberger|Gerard Schildberger]] ([[User talk:Gerard Schildberger|talk]]) 18:50, 20 December 2020 (UTC)
::: I succeeded. Thanks! --[[User:Blek|Blek]] ([[User talk:Blek|talk]]) 21:30, 20 December 2020 (UTC)
:::: The other day someone asked me, so I went looking for a link for this, rather than try and explain it myself, and was fairly surprised there doesn't seem to be one, so it seems like every new joiner has to ask just like this... --[[User:Petelomax|Pete Lomax]] ([[User talk:Petelomax|talk]]) 04:57, 22 December 2020 (UTC)
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