18878481

素因数分解:

$3^3\times {\mathrm{181}}^1\times {\mathrm{3863}}^1$

素因数の和:4053

約数の個数: 16

約数和(自身を含む): 28129920

約数和(自身を除く): 9251439

約数列:

[1, 3, 9, 27, 181, 543, 1629, 3863, 4887, 11589, 34767, 104301, 699203, 2097609, 6292827, 18878481]

約数ペア:

[(1, 18878481), (3, 6292827), (9, 2097609), (27, 699203), (181, 104301), (543, 34767), (1629, 11589), (3863, 4887)]