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Neighbors (Posted on 2014-04-18) Difficulty: 2 of 5
Find the smallest integer n such that both n-1 and n+1 have the same number of divisors as n.
Bonus task: List few additional numbers with said feature.

See The Solution Submitted by Ady TZIDON    
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re(3): computer solution Comment 8 of 8 |
(In reply to re(2): computer solution by Charlie)

Thanks, Charlie!  There's interesting stuff in here.  Time to start digging...
  Posted by Jer on 2014-04-18 23:09:25

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