21009604

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{68213}}^1$

素因数の和:68235

約数の個数: 24

約数和(自身を含む): 45839808

約数和(自身を除く): 24830204

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 68213, 136426, 272852, 477491, 750343, 954982, 1500686, 1909964, 3001372, 5252401, 10504802, 21009604]

約数ペア:

[(1, 21009604), (2, 10504802), (4, 5252401), (7, 3001372), (11, 1909964), (14, 1500686), (22, 954982), (28, 750343), (44, 477491), (77, 272852), (154, 136426), (308, 68213)]