21603604

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{490991}}^1$

素因数の和:491006

約数の個数: 12

約数和(自身を含む): 41243328

約数和(自身を除く): 19639724

約数列:

[1, 2, 4, 11, 22, 44, 490991, 981982, 1963964, 5400901, 10801802, 21603604]

約数ペア:

[(1, 21603604), (2, 10801802), (4, 5400901), (11, 1963964), (22, 981982), (44, 490991)]