20009560

素因数分解:

$2^3\times 5^1\times {\mathrm{500239}}^1$

素因数の和:500250

約数の個数: 16

約数和(自身を含む): 45021600

約数和(自身を除く): 25012040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 500239, 1000478, 2000956, 2501195, 4001912, 5002390, 10004780, 20009560]

約数ペア:

[(1, 20009560), (2, 10004780), (4, 5002390), (5, 4001912), (8, 2501195), (10, 2000956), (20, 1000478), (40, 500239)]