20901807

素因数分解:

$3^4\times {\mathrm{83}}^1\times {\mathrm{3109}}^1$

素因数の和:3204

約数の個数: 20

約数和(自身を含む): 31610040

約数和(自身を除く): 10708233

約数列:

[1, 3, 9, 27, 81, 83, 249, 747, 2241, 3109, 6723, 9327, 27981, 83943, 251829, 258047, 774141, 2322423, 6967269, 20901807]

約数ペア:

[(1, 20901807), (3, 6967269), (9, 2322423), (27, 774141), (81, 258047), (83, 251829), (249, 83943), (747, 27981), (2241, 9327), (3109, 6723)]