21905802

素因数分解:

$2^1\times 3^4\times {\mathrm{135221}}^1$

素因数の和:135235

約数の個数: 20

約数和(自身を含む): 49085586

約数和(自身を除く): 27179784

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 135221, 270442, 405663, 811326, 1216989, 2433978, 3650967, 7301934, 10952901, 21905802]

約数ペア:

[(1, 21905802), (2, 10952901), (3, 7301934), (6, 3650967), (9, 2433978), (18, 1216989), (27, 811326), (54, 405663), (81, 270442), (162, 135221)]