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#1 2013-02-27 05:05:01

jacks
Member
Registered: 2012-11-21
Posts: 80

positive divisers of 10!

The no. of positive divisers of 

which are is in the form of
where

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#2 2013-02-27 05:16:45

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 87,238

Re: positive divisers of 10!

Hi;


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#3 2013-02-27 05:28:38

jacks
Member
Registered: 2012-11-21
Posts: 80

Re: positive divisers of 10!

Yes Bobbym as usual you are always Right.

Would You like to explain it to me how can i tackle these type of Questions

Thanks

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#4 2013-02-27 05:35:48

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 87,238

Re: positive divisers of 10!

We can put it into the form of the other question because it is easy to factor but what if the number were something that was not?

A math method from here I do not know and have not yet found in any references. I just computed the divisors and performed a mod 5 on them.

Last edited by bobbym (2013-02-27 05:36:05)


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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