20729.000000

素因数分解:

$2^1\times 3^2\times {\mathrm{73}}^1\times {\mathrm{257}}^1$

素因数の和:338

約数の個数: 24

約数和(自身を含む): 744588

約数和(自身を除く): 406890

約数列:

[1, 2, 3, 6, 9, 18, 73, 146, 219, 257, 438, 514, 657, 771, 1314, 1542, 2313, 4626, 18761, 37522, 56283, 112566, 168849, 337698]

約数ペア:

[(1, 337698), (2, 168849), (3, 112566), (6, 56283), (9, 37522), (18, 18761), (73, 4626), (146, 2313), (219, 1542), (257, 1314), (438, 771), (514, 657)]