20704209

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1\times {\mathrm{1571}}^1$

素因数の和:1788

約数の個数: 16

約数和(自身を含む): 28975104

約数和(自身を除く): 8270895

約数列:

[1, 3, 23, 69, 191, 573, 1571, 4393, 4713, 13179, 36133, 108399, 300061, 900183, 6901403, 20704209]

約数ペア:

[(1, 20704209), (3, 6901403), (23, 900183), (69, 300061), (191, 108399), (573, 36133), (1571, 13179), (4393, 4713)]