21140441

素因数分解:

$7^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1\times {\mathrm{269}}^1$

素因数の和:488

約数の個数: 16

約数和(自身を含む): 24710400

約数和(自身を除く): 3569959

約数列:

[1, 7, 103, 109, 269, 721, 763, 1883, 11227, 27707, 29321, 78589, 193949, 205247, 3020063, 21140441]

約数ペア:

[(1, 21140441), (7, 3020063), (103, 205247), (109, 193949), (269, 78589), (721, 29321), (763, 27707), (1883, 11227)]