21127084

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{43651}}^1$

素因数の和:43677

約数の個数: 18

約数和(自身を含む): 40640012

約数和(自身を除く): 19512928

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 43651, 87302, 174604, 480161, 960322, 1920644, 5281771, 10563542, 21127084]

約数ペア:

[(1, 21127084), (2, 10563542), (4, 5281771), (11, 1920644), (22, 960322), (44, 480161), (121, 174604), (242, 87302), (484, 43651)]