20997297

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{49639}}^1$

素因数の和:49692

約数の個数: 12

約数和(自身を含む): 30975360

約数和(自身を除く): 9978063

約数列:

[1, 3, 9, 47, 141, 423, 49639, 148917, 446751, 2333033, 6999099, 20997297]

約数ペア:

[(1, 20997297), (3, 6999099), (9, 2333033), (47, 446751), (141, 148917), (423, 49639)]