20418290

素因数分解:

$2^1\times 5^1\times {\mathrm{661}}^1\times {\mathrm{3089}}^1$

素因数の和:3757

約数の個数: 16

約数和(自身を含む): 36820440

約数和(自身を除く): 16402150

約数列:

[1, 2, 5, 10, 661, 1322, 3089, 3305, 6178, 6610, 15445, 30890, 2041829, 4083658, 10209145, 20418290]

約数ペア:

[(1, 20418290), (2, 10209145), (5, 4083658), (10, 2041829), (661, 30890), (1322, 15445), (3089, 6610), (3305, 6178)]