“The sum of the factors of 220 is 284, and the sum of the factors of 284 is 220. They’re called ‘amicable numbers’ and they’re extremely rare. Fermat and Descartes were only able to find on pair each. They’re linked to each other by some divine scheme, and how incredible that your birthday and this number on my watch should be just such a pair.”
wow. <3 math?! excited for another yoko ogawa book!!!
— Jul 09, 2025 03:03PM
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