21886161

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1\times {\mathrm{137}}^1$

素因数の和:301

約数の個数: 32

約数和(自身を含む): 33067008

約数和(自身を除く): 11180847

約数列:

[1, 3, 11, 33, 47, 103, 137, 141, 309, 411, 517, 1133, 1507, 1551, 3399, 4521, 4841, 6439, 14111, 14523, 19317, 42333, 53251, 70829, 155221, 159753, 212487, 465663, 663217, 1989651, 7295387, 21886161]

約数ペア:

[(1, 21886161), (3, 7295387), (11, 1989651), (33, 663217), (47, 465663), (103, 212487), (137, 159753), (141, 155221), (309, 70829), (411, 53251), (517, 42333), (1133, 19317), (1507, 14523), (1551, 14111), (3399, 6439), (4521, 4841)]