20390859

素因数分解:

$3^6\times {\mathrm{83}}^1\times {\mathrm{337}}^1$

素因数の和:438

約数の個数: 28

約数和(自身を含む): 31032456

約数和(自身を除く): 10641597

約数列:

[1, 3, 9, 27, 81, 83, 243, 249, 337, 729, 747, 1011, 2241, 3033, 6723, 9099, 20169, 27297, 27971, 60507, 81891, 83913, 245673, 251739, 755217, 2265651, 6796953, 20390859]

約数ペア:

[(1, 20390859), (3, 6796953), (9, 2265651), (27, 755217), (81, 251739), (83, 245673), (243, 83913), (249, 81891), (337, 60507), (729, 27971), (747, 27297), (1011, 20169), (2241, 9099), (3033, 6723)]