21567654

素因数分解:

$2^1\times 3^3\times {\mathrm{399401}}^1$

素因数の和:399412

約数の個数: 16

約数和(自身を含む): 47928240

約数和(自身を除く): 26360586

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 399401, 798802, 1198203, 2396406, 3594609, 7189218, 10783827, 21567654]

約数ペア:

[(1, 21567654), (2, 10783827), (3, 7189218), (6, 3594609), (9, 2396406), (18, 1198203), (27, 798802), (54, 399401)]