20491306

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{21661}}^1$

素因数の和:21717

約数の個数: 16

約数和(自身を含む): 34312608

約数和(自身を除く): 13821302

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 21661, 43322, 238271, 476542, 931423, 1862846, 10245653, 20491306]

約数ペア:

[(1, 20491306), (2, 10245653), (11, 1862846), (22, 931423), (43, 476542), (86, 238271), (473, 43322), (946, 21661)]