21395637

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{11161}}^1$

素因数の和:11241

約数の個数: 16

約数和(自身を含む): 32146560

約数和(自身を除く): 10750923

約数列:

[1, 3, 9, 27, 71, 213, 639, 1917, 11161, 33483, 100449, 301347, 792431, 2377293, 7131879, 21395637]

約数ペア:

[(1, 21395637), (3, 7131879), (9, 2377293), (27, 792431), (71, 301347), (213, 100449), (639, 33483), (1917, 11161)]