323

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Number

$323$ (three hundred and twenty-three) is:

$17 \times 19$


The $3$rd term of the smallest triplet of integers in arithmetic sequence which have the same divisor sum:
$\map {\sigma_1} {267} = \map {\sigma_1} {295} = \map {\sigma_1} {323} = 360$


Also see


Sources

  • 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $267$
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