18820040

素因数分解:

$2^3\times 5^1\times {\mathrm{470501}}^1$

素因数の和:470512

約数の個数: 16

約数和(自身を含む): 42345180

約数和(自身を除く): 23525140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 470501, 941002, 1882004, 2352505, 3764008, 4705010, 9410020, 18820040]

約数ペア:

[(1, 18820040), (2, 9410020), (4, 4705010), (5, 3764008), (8, 2352505), (10, 1882004), (20, 941002), (40, 470501)]