18780212

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{3989}}^1$

素因数の和:4111

約数の個数: 24

約数和(自身を含む): 36197280

約数和(自身を除く): 17417068

約数列:

[1, 2, 4, 11, 22, 44, 107, 214, 428, 1177, 2354, 3989, 4708, 7978, 15956, 43879, 87758, 175516, 426823, 853646, 1707292, 4695053, 9390106, 18780212]

約数ペア:

[(1, 18780212), (2, 9390106), (4, 4695053), (11, 1707292), (22, 853646), (44, 426823), (107, 175516), (214, 87758), (428, 43879), (1177, 15956), (2354, 7978), (3989, 4708)]