RE: function sigma number theory

[dastew]

try
x=10
y=sum(factor(x))+1+x


doug

> Date: Fri, 20 Nov 2009 09:19:29 -0800
> From: address@hidden
> To: address@hidden
> Subject: function sigma number theory
>
>
> hi
>
> I'm searching the function sigma of number theory, where it calculate the
> sum of all prime factors of a number, f.e.
>
> sigma (10)=1+2+5+10
>
> I would like to know if it's defined in the library of octave or matlab and
> how call it as a function.
>
> thanks!
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