18216040

素因数分解:

$2^3\times 5^1\times {\mathrm{455401}}^1$

素因数の和:455412

約数の個数: 16

約数和(自身を含む): 40986180

約数和(自身を除く): 22770140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 455401, 910802, 1821604, 2277005, 3643208, 4554010, 9108020, 18216040]

約数ペア:

[(1, 18216040), (2, 9108020), (4, 4554010), (5, 3643208), (8, 2277005), (10, 1821604), (20, 910802), (40, 455401)]