20616040

素因数分解:

$2^3\times 5^1\times {\mathrm{515401}}^1$

素因数の和:515412

約数の個数: 16

約数和(自身を含む): 46386180

約数和(自身を除く): 25770140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 515401, 1030802, 2061604, 2577005, 4123208, 5154010, 10308020, 20616040]

約数ペア:

[(1, 20616040), (2, 10308020), (4, 5154010), (5, 4123208), (8, 2577005), (10, 2061604), (20, 1030802), (40, 515401)]