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Euler 12.

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Robert L.

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Sep 24, 2017, 5:44:07 AM9/24/17
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> What is the value of the first triangle number to have over five
> hundred divisors?

(require math/number-theory)

(do ((n 1 (+ n i))
(i 2 (+ i 1)))
((> (length (divisors n)) 500) n))

76576500

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