The Six Triperfect Numbers Numberphile

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Ben Sparks discusses aliquot sequences and why 276 holds a surprise. This video continues at https://youtu.be/Yh1QUYn2f3I ...

Matt Parker talks about

Which of these

Richard Elwes discusses the original Big

Eric Lander discusses how quasiperfect

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Dr James Grime discusses highly composite

We are re-visiting Perfect

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Ten factorial is 10x9x8x7x6x5x4x3x2x1 - or

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