An amazing thing about 276 - Numberphile

Ben Sparks discusses aliquot sequences and why 276 holds a surprise. This video continues at https://youtu.be/Yh1QUYn2f3I and delves into so-called Untouchable Numbers. More links & stuff in full description below ↓↓↓ Ben Sparks: https://www.bensparks.co.uk More Ben Sparks on Numberphile: http://bit.ly/Sparks_Playlist Perfect Numbers on Numberphile: https://www.youtube.com/playlist?list=PLt5AfwLFPxWJILwhaYs0Cz76-XK4cu3WC Amicable Numbers: https://youtu.be/fUSZBVYZdKY GeoGebra file: https://www.geogebra.org/m/bkpq8uqp Patreon: http://www.patreon.com/numberphile Numberphile is supported by Jane Street. Learn more about them (and exciting career opportunities) at: https://bit.ly/numberphile-janestreet We're also supported by the Simons Laufer Mathematical Sciences Institute (formerly MSRI): http://bit.ly/MSRINumberphile Our thanks also to the Simons Foundation: https://www.simonsfoundation.org NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile Subscribe: http://bit.ly/Numberphile_Sub Videos by Brady Haran Animation by Pete McPartlan Numberphile T-Shirts and Merch: https://teespring.com/stores/numberphile Brady's videos subreddit: http://www.reddit.com/r/BradyHaran/ Brady's latest videos across all channels: http://www.bradyharanblog.com/ Sign up for (occasional) emails: http://eepurl.com/YdjL9