12,285

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Number

$12 \, 285$ (twelve thousand, two hundred and eighty-five) is:

$3^3 \times 5 \times 7 \times 13$


The smaller of the $7$th amicable pair and the $1$st odd amicable pair, with $14 \, 595$:
$\map {\sigma_1} {12 \, 285} = \map {\sigma_1} {14 \, 595} = 26 \, 880 = 12 \, 285 + 14 \, 595$


Arithmetic Functions on $12 \, 285$

\(\ds \map {\sigma_1} { 12 \, 285 }\) \(=\) \(\ds 26 \, 880\) $\sigma_1$ of $12 \, 285$


Also see


Sources

  • 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $12,285$
  • 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $12,285$
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