20211740

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{16567}}^1$

素因数の和:16637

約数の個数: 24

約数和(自身を含む): 43143072

約数和(自身を除く): 22931332

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 16567, 33134, 66268, 82835, 165670, 331340, 1010587, 2021174, 4042348, 5052935, 10105870, 20211740]

約数ペア:

[(1, 20211740), (2, 10105870), (4, 5052935), (5, 4042348), (10, 2021174), (20, 1010587), (61, 331340), (122, 165670), (244, 82835), (305, 66268), (610, 33134), (1220, 16567)]