19866946

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{21001}}^1$

素因数の和:21057

約数の個数: 16

約数和(自身を含む): 33267168

約数和(自身を除く): 13400222

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 21001, 42002, 231011, 462022, 903043, 1806086, 9933473, 19866946]

約数ペア:

[(1, 19866946), (2, 9933473), (11, 1806086), (22, 903043), (43, 462022), (86, 231011), (473, 42002), (946, 21001)]