20710778

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{21893}}^1$

素因数の和:21949

約数の個数: 16

約数和(自身を含む): 34680096

約数和(自身を除く): 13969318

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 21893, 43786, 240823, 481646, 941399, 1882798, 10355389, 20710778]

約数ペア:

[(1, 20710778), (2, 10355389), (11, 1882798), (22, 941399), (43, 481646), (86, 240823), (473, 43786), (946, 21893)]