21135438

素因数分解:

$2^1\times 3^3\times {\mathrm{391397}}^1$

素因数の和:391408

約数の個数: 16

約数和(自身を含む): 46967760

約数和(自身を除く): 25832322

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 391397, 782794, 1174191, 2348382, 3522573, 7045146, 10567719, 21135438]

約数ペア:

[(1, 21135438), (2, 10567719), (3, 7045146), (6, 3522573), (9, 2348382), (18, 1174191), (27, 782794), (54, 391397)]