664588.0000000

素因数分解:

$3^2\times {\mathrm{71}}^2\times {\mathrm{109}}^1$

素因数の和:257

約数の個数: 18

約数和(自身を含む): 7311590

約数和(自身を除く): 2366369

約数列:

[1, 3, 9, 71, 109, 213, 327, 639, 981, 5041, 7739, 15123, 23217, 45369, 69651, 549469, 1648407, 4945221]

約数ペア:

[(1, 4945221), (3, 1648407), (9, 549469), (71, 69651), (109, 45369), (213, 23217), (327, 15123), (639, 7739), (981, 5041)]