20281443

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{10613}}^1$

素因数の和:10643

約数の個数: 24

約数和(自身を含む): 33879888

約数和(自身を除く): 13598445

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 10613, 31839, 74291, 137969, 222873, 413907, 520037, 965783, 1560111, 2897349, 6760481, 20281443]

約数ペア:

[(1, 20281443), (3, 6760481), (7, 2897349), (13, 1560111), (21, 965783), (39, 520037), (49, 413907), (91, 222873), (147, 137969), (273, 74291), (637, 31839), (1911, 10613)]