20568807

素因数分解:

$3^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{2003}}^1$

素因数の和:2179

約数の個数: 24

約数和(自身を含む): 34180224

約数和(自身を除く): 13611417

約数列:

[1, 3, 7, 9, 21, 63, 163, 489, 1141, 1467, 2003, 3423, 6009, 10269, 14021, 18027, 42063, 126189, 326489, 979467, 2285423, 2938401, 6856269, 20568807]

約数ペア:

[(1, 20568807), (3, 6856269), (7, 2938401), (9, 2285423), (21, 979467), (63, 326489), (163, 126189), (489, 42063), (1141, 18027), (1467, 14021), (2003, 10269), (3423, 6009)]