20811160

素因数分解:

$2^3\times 5^1\times {\mathrm{520279}}^1$

素因数の和:520290

約数の個数: 16

約数和(自身を含む): 46825200

約数和(自身を除く): 26014040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 520279, 1040558, 2081116, 2601395, 4162232, 5202790, 10405580, 20811160]

約数ペア:

[(1, 20811160), (2, 10405580), (4, 5202790), (5, 4162232), (8, 2601395), (10, 2081116), (20, 1040558), (40, 520279)]