19889020

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43237}}^1$

素因数の和:43269

約数の個数: 24

約数和(自身を含む): 43583904

約数和(自身を除く): 23694884

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 43237, 86474, 172948, 216185, 432370, 864740, 994451, 1988902, 3977804, 4972255, 9944510, 19889020]

約数ペア:

[(1, 19889020), (2, 9944510), (4, 4972255), (5, 3977804), (10, 1988902), (20, 994451), (23, 864740), (46, 432370), (92, 216185), (115, 172948), (230, 86474), (460, 43237)]