2021305419

素因数分解:

$3^2\times 7^2\times {\mathrm{4583459}}^1$

素因数の和:4583479

約数の個数: 18

約数和(自身を含む): 3396343860

約数和(自身を除く): 1375038441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 4583459, 13750377, 32084213, 41251131, 96252639, 224589491, 288757917, 673768473, 2021305419]

約数ペア:

[(1, 2021305419), (3, 673768473), (7, 288757917), (9, 224589491), (21, 96252639), (49, 41251131), (63, 32084213), (147, 13750377), (441, 4583459)]