19802008

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{145603}}^1$

素因数の和:145626

約数の個数: 16

約数和(自身を含む): 39313080

約数和(自身を除く): 19511072

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 145603, 291206, 582412, 1164824, 2475251, 4950502, 9901004, 19802008]

約数ペア:

[(1, 19802008), (2, 9901004), (4, 4950502), (8, 2475251), (17, 1164824), (34, 582412), (68, 291206), (136, 145603)]