20802879

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{241}}^1$

素因数の和:412

約数の個数: 32

約数和(自身を含む): 32524800

約数和(自身を除く): 11721921

約数列:

[1, 3, 9, 23, 27, 69, 139, 207, 241, 417, 621, 723, 1251, 2169, 3197, 3753, 5543, 6507, 9591, 16629, 28773, 33499, 49887, 86319, 100497, 149661, 301491, 770477, 904473, 2311431, 6934293, 20802879]

約数ペア:

[(1, 20802879), (3, 6934293), (9, 2311431), (23, 904473), (27, 770477), (69, 301491), (139, 149661), (207, 100497), (241, 86319), (417, 49887), (621, 33499), (723, 28773), (1251, 16629), (2169, 9591), (3197, 6507), (3753, 5543)]