20803881

素因数分解:

$3^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{1459}}^1$

素因数の和:1573

約数の個数: 24

約数和(自身を含む): 32622240

約数和(自身を除く): 11818359

約数列:

[1, 3, 7, 21, 49, 97, 147, 291, 679, 1459, 2037, 4377, 4753, 10213, 14259, 30639, 71491, 141523, 214473, 424569, 990661, 2971983, 6934627, 20803881]

約数ペア:

[(1, 20803881), (3, 6934627), (7, 2971983), (21, 990661), (49, 424569), (97, 214473), (147, 141523), (291, 71491), (679, 30639), (1459, 14259), (2037, 10213), (4377, 4753)]