19712889

素因数分解:

$3^6\times 7^1\times {\mathrm{3863}}^1$

素因数の和:3888

約数の個数: 28

約数和(自身を含む): 33786816

約数和(自身を除く): 14073927

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1701, 3863, 5103, 11589, 27041, 34767, 81123, 104301, 243369, 312903, 730107, 938709, 2190321, 2816127, 6570963, 19712889]

約数ペア:

[(1, 19712889), (3, 6570963), (7, 2816127), (9, 2190321), (21, 938709), (27, 730107), (63, 312903), (81, 243369), (189, 104301), (243, 81123), (567, 34767), (729, 27041), (1701, 11589), (3863, 5103)]