20796980

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4663}}^1$

素因数の和:4895

約数の個数: 24

約数和(自身を含む): 43878912

約数和(自身を除く): 23081932

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4460, 4663, 9326, 18652, 23315, 46630, 93260, 1039849, 2079698, 4159396, 5199245, 10398490, 20796980]

約数ペア:

[(1, 20796980), (2, 10398490), (4, 5199245), (5, 4159396), (10, 2079698), (20, 1039849), (223, 93260), (446, 46630), (892, 23315), (1115, 18652), (2230, 9326), (4460, 4663)]