21666004

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{285079}}^1$

素因数の和:285102

約数の個数: 12

約数和(自身を含む): 39911200

約数和(自身を除く): 18245196

約数列:

[1, 2, 4, 19, 38, 76, 285079, 570158, 1140316, 5416501, 10833002, 21666004]

約数ペア:

[(1, 21666004), (2, 10833002), (4, 5416501), (19, 1140316), (38, 570158), (76, 285079)]