20885084

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{43151}}^1$

素因数の和:43177

約数の個数: 18

約数和(自身を含む): 40174512

約数和(自身を除く): 19289428

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 43151, 86302, 172604, 474661, 949322, 1898644, 5221271, 10442542, 20885084]

約数ペア:

[(1, 20885084), (2, 10442542), (4, 5221271), (11, 1898644), (22, 949322), (44, 474661), (121, 172604), (242, 86302), (484, 43151)]