20081019

素因数分解:

$3^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{4001}}^1$

素因数の和:4250

約数の個数: 16

約数和(自身を含む): 30735360

約数和(自身を除く): 10654341

約数列:

[1, 3, 7, 21, 239, 717, 1673, 4001, 5019, 12003, 28007, 84021, 956239, 2868717, 6693673, 20081019]

約数ペア:

[(1, 20081019), (3, 6693673), (7, 2868717), (21, 956239), (239, 84021), (717, 28007), (1673, 12003), (4001, 5019)]