20117740

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{18979}}^1$

素因数の和:19041

約数の個数: 24

約数和(自身を含む): 43046640

約数和(自身を除く): 22928900

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 18979, 37958, 75916, 94895, 189790, 379580, 1005887, 2011774, 4023548, 5029435, 10058870, 20117740]

約数ペア:

[(1, 20117740), (2, 10058870), (4, 5029435), (5, 4023548), (10, 2011774), (20, 1005887), (53, 379580), (106, 189790), (212, 94895), (265, 75916), (530, 37958), (1060, 18979)]