20960019

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{20981}}^1$

素因数の和:21027

約数の個数: 16

約数和(自身を含む): 31892640

約数和(自身を除く): 10932621

約数列:

[1, 3, 9, 27, 37, 111, 333, 999, 20981, 62943, 188829, 566487, 776297, 2328891, 6986673, 20960019]

約数ペア:

[(1, 20960019), (3, 6986673), (9, 2328891), (27, 776297), (37, 566487), (111, 188829), (333, 62943), (999, 20981)]