20640216

素因数分解:

$2^3\times 3^1\times {\mathrm{860009}}^1$

素因数の和:860018

約数の個数: 16

約数和(自身を含む): 51600600

約数和(自身を除く): 30960384

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 860009, 1720018, 2580027, 3440036, 5160054, 6880072, 10320108, 20640216]

約数ペア:

[(1, 20640216), (2, 10320108), (3, 6880072), (4, 5160054), (6, 3440036), (8, 2580027), (12, 1720018), (24, 860009)]