21982004

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{499591}}^1$

素因数の和:499606

約数の個数: 12

約数和(自身を含む): 41965728

約数和(自身を除く): 19983724

約数列:

[1, 2, 4, 11, 22, 44, 499591, 999182, 1998364, 5495501, 10991002, 21982004]

約数ペア:

[(1, 21982004), (2, 10991002), (4, 5495501), (11, 1998364), (22, 999182), (44, 499591)]