21043208

素因数分解:

$2^3\times {\mathrm{1091}}^1\times {\mathrm{2411}}^1$

素因数の和:3508

約数の個数: 16

約数和(自身を含む): 39508560

約数和(自身を除く): 18465352

約数列:

[1, 2, 4, 8, 1091, 2182, 2411, 4364, 4822, 8728, 9644, 19288, 2630401, 5260802, 10521604, 21043208]

約数ペア:

[(1, 21043208), (2, 10521604), (4, 5260802), (8, 2630401), (1091, 19288), (2182, 9644), (2411, 8728), (4364, 4822)]