21981668

素因数分解:

$2^2\times {\mathrm{127}}^1\times {\mathrm{43271}}^1$

素因数の和:43402

約数の個数: 12

約数和(自身を含む): 38771712

約数和(自身を除く): 16790044

約数列:

[1, 2, 4, 127, 254, 508, 43271, 86542, 173084, 5495417, 10990834, 21981668]

約数ペア:

[(1, 21981668), (2, 10990834), (4, 5495417), (127, 173084), (254, 86542), (508, 43271)]