21581528

素因数分解:

$2^3\times {\mathrm{43}}^2\times {\mathrm{1459}}^1$

素因数の和:1551

約数の個数: 24

約数和(自身を含む): 41456700

約数和(自身を除く): 19875172

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 1459, 1849, 2918, 3698, 5836, 7396, 11672, 14792, 62737, 125474, 250948, 501896, 2697691, 5395382, 10790764, 21581528]

約数ペア:

[(1, 21581528), (2, 10790764), (4, 5395382), (8, 2697691), (43, 501896), (86, 250948), (172, 125474), (344, 62737), (1459, 14792), (1849, 11672), (2918, 7396), (3698, 5836)]