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

• Previous  ... Next: Amicable Pair
• Next: Sequence of Odd Amicable Pairs

Sources

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