20588391

素因数分解:

$3^3\times {\mathrm{37}}^2\times {\mathrm{557}}^1$

素因数の和:640

約数の個数: 24

約数和(自身を含む): 31404240

約数和(自身を除く): 10815849

約数列:

[1, 3, 9, 27, 37, 111, 333, 557, 999, 1369, 1671, 4107, 5013, 12321, 15039, 20609, 36963, 61827, 185481, 556443, 762533, 2287599, 6862797, 20588391]

約数ペア:

[(1, 20588391), (3, 6862797), (9, 2287599), (27, 762533), (37, 556443), (111, 185481), (333, 61827), (557, 36963), (999, 20609), (1369, 15039), (1671, 12321), (4107, 5013)]