20640086

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{2243}}^1$

素因数の和:2395

約数の個数: 16

約数和(自身を含む): 31990464

約数和(自身を除く): 11350378

約数列:

[1, 2, 43, 86, 107, 214, 2243, 4486, 4601, 9202, 96449, 192898, 240001, 480002, 10320043, 20640086]

約数ペア:

[(1, 20640086), (2, 10320043), (43, 480002), (86, 240001), (107, 192898), (214, 96449), (2243, 9202), (4486, 4601)]