20439018

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{26407}}^1$

素因数の和:26458

約数の個数: 24

約数和(自身を含む): 45316128

約数和(自身を除く): 24877110

約数列:

[1, 2, 3, 6, 9, 18, 43, 86, 129, 258, 387, 774, 26407, 52814, 79221, 158442, 237663, 475326, 1135501, 2271002, 3406503, 6813006, 10219509, 20439018]

約数ペア:

[(1, 20439018), (2, 10219509), (3, 6813006), (6, 3406503), (9, 2271002), (18, 1135501), (43, 475326), (86, 237663), (129, 158442), (258, 79221), (387, 52814), (774, 26407)]