15120189

素因数分解:

$3^6\times 7^1\times {\mathrm{2963}}^1$

素因数の和:2988

約数の個数: 28

約数和(自身を含む): 25917216

約数和(自身を除く): 10797027

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1701, 2963, 5103, 8889, 20741, 26667, 62223, 80001, 186669, 240003, 560007, 720009, 1680021, 2160027, 5040063, 15120189]

約数ペア:

[(1, 15120189), (3, 5040063), (7, 2160027), (9, 1680021), (21, 720009), (27, 560007), (63, 240003), (81, 186669), (189, 80001), (243, 62223), (567, 26667), (729, 20741), (1701, 8889), (2963, 5103)]