en.wikipedia.org/wiki/Table_of_divisors

The tables below list all of the divisors of the numbers 1 to 1000. A divisor of an integer n is an ... σ(n) is the sum of the positive divisors of n, including 1 and n itself; s(n) is the sum of the proper divisors of n, which does not include n itself; that ...

en.wikipedia.org/wiki/Shutter_speed

In photography, shutter speed or exposure time is the length of time when the film or digital ... For example, f/8 lets 4 times more light into the camera as f/16 does. A shutter speed of 1⁄50 s with an f/4 aperture gives the same exposure value ...

socratic.org/questions/what-does-a-1-1-ratio-mean

May 23, 2015 ... Ratio is a definition of how big something is compared to something else (in quantity, number, value). It does not require items on the two sides ...

www.reddit.com/r/2007scape/comments/4l7n3m/how_much_does_150_con_cost_and_what_do_i_build

The community for Old School RuneScape discussion on reddit. Join us for game discussions, weekly events and skilling competitions!

www.bibleref.com/John/1/John-1-50.html

John 1:50 Parallel Verses [⇓ See commentary ⇓]. John 1:50, NIV: "Jesus said, ' You believe because I told you I saw you under the fig tree. You will see greater ...

www.quora.com/What-does-a-map-scale-1-50-mean

Feb 27, 2018 ... 1/50 is a very unusual map scale. If you wanted to show a 100x100 meter area on such a map, the map would have to be 2x2 meters. It is unusual to see a map ...

www.khanacademy.org/math/pre-algebra/pre-algebra-ratios-rates/pre-algebra-ratios-intro/v/equivalent-ratios

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www.khanacademy.org/math/algebra-home/alg-series-and-induction/alg-sum-of-n-squares/v/sum-of-n-squares-1

I took this observation on its face value and understood the video but what I'm wondering is... Where does this insight come from? Is there a proof to it? Has Sal ...