20806390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{189149}}^1$

素因数の和:189167

約数の個数: 16

約数和(自身を含む): 40856400

約数和(自身を除く): 20050010

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 189149, 378298, 945745, 1891490, 2080639, 4161278, 10403195, 20806390]

約数ペア:

[(1, 20806390), (2, 10403195), (5, 4161278), (10, 2080639), (11, 1891490), (22, 945745), (55, 378298), (110, 189149)]