28219521

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{20857}}^1$

素因数の和:20912

約数の個数: 16

約数和(自身を含む): 42049728

約数和(自身を除く): 13830207

約数列:

[1, 3, 11, 33, 41, 123, 451, 1353, 20857, 62571, 229427, 688281, 855137, 2565411, 9406507, 28219521]

約数ペア:

[(1, 28219521), (3, 9406507), (11, 2565411), (33, 855137), (41, 688281), (123, 229427), (451, 62571), (1353, 20857)]