28381221

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{283}}^1\times {\mathrm{1013}}^1$

素因数の和:1313

約数の個数: 24

約数和(自身を含む): 44924256

約数和(自身を除く): 16543035

約数列:

[1, 3, 9, 11, 33, 99, 283, 849, 1013, 2547, 3039, 3113, 9117, 9339, 11143, 28017, 33429, 100287, 286679, 860037, 2580111, 3153469, 9460407, 28381221]

約数ペア:

[(1, 28381221), (3, 9460407), (9, 3153469), (11, 2580111), (33, 860037), (99, 286679), (283, 100287), (849, 33429), (1013, 28017), (2547, 11143), (3039, 9339), (3113, 9117)]