18003220

素因数分解:

$2^2\times 5^1\times {\mathrm{900161}}^1$

素因数の和:900170

約数の個数: 12

約数和(自身を含む): 37806804

約数和(自身を除く): 19803584

約数列:

[1, 2, 4, 5, 10, 20, 900161, 1800322, 3600644, 4500805, 9001610, 18003220]

約数ペア:

[(1, 18003220), (2, 9001610), (4, 4500805), (5, 3600644), (10, 1800322), (20, 900161)]