21105620

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{36389}}^1$

素因数の和:36427

約数の個数: 24

約数和(自身を含む): 45851400

約数和(自身を除く): 24745780

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 36389, 72778, 145556, 181945, 363890, 727780, 1055281, 2110562, 4221124, 5276405, 10552810, 21105620]

約数ペア:

[(1, 21105620), (2, 10552810), (4, 5276405), (5, 4221124), (10, 2110562), (20, 1055281), (29, 727780), (58, 363890), (116, 181945), (145, 145556), (290, 72778), (580, 36389)]