19961546

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{21101}}^1$

素因数の和:21157

約数の個数: 16

約数和(自身を含む): 33425568

約数和(自身を除く): 13464022

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 21101, 42202, 232111, 464222, 907343, 1814686, 9980773, 19961546]

約数ペア:

[(1, 19961546), (2, 9980773), (11, 1814686), (22, 907343), (43, 464222), (86, 232111), (473, 42202), (946, 21101)]