18128008

素因数分解:

$2^3\times {\mathrm{109}}^1\times {\mathrm{20789}}^1$

素因数の和:20904

約数の個数: 16

約数和(自身を含む): 34303500

約数和(自身を除く): 16175492

約数列:

[1, 2, 4, 8, 109, 218, 436, 872, 20789, 41578, 83156, 166312, 2266001, 4532002, 9064004, 18128008]

約数ペア:

[(1, 18128008), (2, 9064004), (4, 4532002), (8, 2266001), (109, 166312), (218, 83156), (436, 41578), (872, 20789)]