18885987

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{16267}}^1$

素因数の和:16319

約数の個数: 16

約数和(自身を含む): 28631680

約数和(自身を除く): 9745693

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 16267, 48801, 146403, 439209, 699481, 2098443, 6295329, 18885987]

約数ペア:

[(1, 18885987), (3, 6295329), (9, 2098443), (27, 699481), (43, 439209), (129, 146403), (387, 48801), (1161, 16267)]