20818040

素因数分解:

$2^3\times 5^1\times {\mathrm{520451}}^1$

素因数の和:520462

約数の個数: 16

約数和(自身を含む): 46840680

約数和(自身を除く): 26022640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 520451, 1040902, 2081804, 2602255, 4163608, 5204510, 10409020, 20818040]

約数ペア:

[(1, 20818040), (2, 10409020), (4, 5204510), (5, 4163608), (8, 2602255), (10, 2081804), (20, 1040902), (40, 520451)]