19904008

素因数分解:

$2^3\times {\mathrm{17}}^2\times {\mathrm{8609}}^1$

素因数の和:8649

約数の個数: 24

約数和(自身を含む): 39649050

約数和(自身を除く): 19745042

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 289, 578, 1156, 2312, 8609, 17218, 34436, 68872, 146353, 292706, 585412, 1170824, 2488001, 4976002, 9952004, 19904008]

約数ペア:

[(1, 19904008), (2, 9952004), (4, 4976002), (8, 2488001), (17, 1170824), (34, 585412), (68, 292706), (136, 146353), (289, 68872), (578, 34436), (1156, 17218), (2312, 8609)]