21031604

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{477991}}^1$

素因数の和:478006

約数の個数: 12

約数和(自身を含む): 40151328

約数和(自身を除く): 19119724

約数列:

[1, 2, 4, 11, 22, 44, 477991, 955982, 1911964, 5257901, 10515802, 21031604]

約数ペア:

[(1, 21031604), (2, 10515802), (4, 5257901), (11, 1911964), (22, 955982), (44, 477991)]