19998423

素因数分解:

$3^2\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{499}}^1$

素因数の和:639

約数の個数: 24

約数和(自身を含む): 29822000

約数和(自身を除く): 9823577

約数列:

[1, 3, 9, 61, 73, 183, 219, 499, 549, 657, 1497, 4453, 4491, 13359, 30439, 36427, 40077, 91317, 109281, 273951, 327843, 2222047, 6666141, 19998423]

約数ペア:

[(1, 19998423), (3, 6666141), (9, 2222047), (61, 327843), (73, 273951), (183, 109281), (219, 91317), (499, 40077), (549, 36427), (657, 30439), (1497, 13359), (4453, 4491)]