18318213

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{263}}^1$

素因数の和:449

約数の個数: 24

約数和(自身を含む): 27181440

約数和(自身を除く): 8863227

約数列:

[1, 3, 9, 71, 109, 213, 263, 327, 639, 789, 981, 2367, 7739, 18673, 23217, 28667, 56019, 69651, 86001, 168057, 258003, 2035357, 6106071, 18318213]

約数ペア:

[(1, 18318213), (3, 6106071), (9, 2035357), (71, 258003), (109, 168057), (213, 86001), (263, 69651), (327, 56019), (639, 28667), (789, 23217), (981, 18673), (2367, 7739)]