21907989

素因数分解:

$3^4\times {\mathrm{179}}^1\times {\mathrm{1511}}^1$

素因数の和:1702

約数の個数: 20

約数和(自身を含む): 32931360

約数和(自身を除く): 11023371

約数列:

[1, 3, 9, 27, 81, 179, 537, 1511, 1611, 4533, 4833, 13599, 14499, 40797, 122391, 270469, 811407, 2434221, 7302663, 21907989]

約数ペア:

[(1, 21907989), (3, 7302663), (9, 2434221), (27, 811407), (81, 270469), (179, 122391), (537, 40797), (1511, 14499), (1611, 13599), (4533, 4833)]