20018666

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{5431}}^1$

素因数の和:5549

約数の個数: 16

約数和(自身を含む): 31940160

約数和(自身を除く): 11921494

約数列:

[1, 2, 19, 38, 97, 194, 1843, 3686, 5431, 10862, 103189, 206378, 526807, 1053614, 10009333, 20018666]

約数ペア:

[(1, 20018666), (2, 10009333), (19, 1053614), (38, 526807), (97, 206378), (194, 103189), (1843, 10862), (3686, 5431)]