20346440

素因数分解:

$2^3\times 5^1\times {\mathrm{508661}}^1$

素因数の和:508672

約数の個数: 16

約数和(自身を含む): 45779580

約数和(自身を除く): 25433140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 508661, 1017322, 2034644, 2543305, 4069288, 5086610, 10173220, 20346440]

約数ペア:

[(1, 20346440), (2, 10173220), (4, 5086610), (5, 4069288), (8, 2543305), (10, 2034644), (20, 1017322), (40, 508661)]