21855999

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{38959}}^1$

素因数の和:38990

約数の個数: 16

約数和(自身を含む): 33661440

約数和(自身を除く): 11805441

約数列:

[1, 3, 11, 17, 33, 51, 187, 561, 38959, 116877, 428549, 662303, 1285647, 1986909, 7285333, 21855999]

約数ペア:

[(1, 21855999), (3, 7285333), (11, 1986909), (17, 1285647), (33, 662303), (51, 428549), (187, 116877), (561, 38959)]