Finding sigma(210)

Vi Nguyen · Aug 17, 2016

how to solve this problem
Find sigma(210)\sigma\sigma

Evgeny.Makarov · Aug 17, 2016

Hi, and welcome to the forum!

Vi Nguyen said:

how to solve this problem
Find sigma(210)\sigma\sigma

I am not sure what sigma ($\Sigma$ or $\sigma$) means in your problem. Perhaps you can use the formula editor to the right of the edit box to enter the formula exactly as it appears in the problem statement, as well as the complete problem statement itself. LaTeX symbol codes (they start with a backslash) should be enclosed in the $$...$$ tags.

I like Serena · Aug 17, 2016

Vi Nguyen said:

how to solve this problem
Find sigma(210)\sigma\sigma

Hi Vi Nguyen! Welcome to MHB! ;)

The only sigma function I know, is the sum-of-divisors function. See https://en.m.wikipedia.org/wiki/Divisor_function .

In that case we have:
$$\sigma(210)=576$$

Finding sigma(210)

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Finding sigma(210)

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