20809767

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{13417}}^1$

素因数の和:13478

約数の個数: 16

約数和(自身を含む): 30915072

約数和(自身を除く): 10105305

約数列:

[1, 3, 11, 33, 47, 141, 517, 1551, 13417, 40251, 147587, 442761, 630599, 1891797, 6936589, 20809767]

約数ペア:

[(1, 20809767), (3, 6936589), (11, 1891797), (33, 630599), (47, 442761), (141, 147587), (517, 40251), (1551, 13417)]