20804432

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2749}}^1$

素因数の和:2811

約数の個数: 40

約数和(自身を含む): 45012000

約数和(自身を除く): 24207568

約数列:

[1, 2, 4, 8, 11, 16, 22, 43, 44, 86, 88, 172, 176, 344, 473, 688, 946, 1892, 2749, 3784, 5498, 7568, 10996, 21992, 30239, 43984, 60478, 118207, 120956, 236414, 241912, 472828, 483824, 945656, 1300277, 1891312, 2600554, 5201108, 10402216, 20804432]

約数ペア:

[(1, 20804432), (2, 10402216), (4, 5201108), (8, 2600554), (11, 1891312), (16, 1300277), (22, 945656), (43, 483824), (44, 472828), (86, 241912), (88, 236414), (172, 120956), (176, 118207), (344, 60478), (473, 43984), (688, 30239), (946, 21992), (1892, 10996), (2749, 7568), (3784, 5498)]