21830020

素因数分解:

$2^2\times 5^1\times {\mathrm{523}}^1\times {\mathrm{2087}}^1$

素因数の和:2619

約数の個数: 24

約数和(自身を含む): 45952704

約数和(自身を除く): 24122684

約数列:

[1, 2, 4, 5, 10, 20, 523, 1046, 2087, 2092, 2615, 4174, 5230, 8348, 10435, 10460, 20870, 41740, 1091501, 2183002, 4366004, 5457505, 10915010, 21830020]

約数ペア:

[(1, 21830020), (2, 10915010), (4, 5457505), (5, 4366004), (10, 2183002), (20, 1091501), (523, 41740), (1046, 20870), (2087, 10460), (2092, 10435), (2615, 8348), (4174, 5230)]