20168840

素因数分解:

$2^3\times 5^1\times {\mathrm{504221}}^1$

素因数の和:504232

約数の個数: 16

約数和(自身を含む): 45379980

約数和(自身を除く): 25211140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 504221, 1008442, 2016884, 2521105, 4033768, 5042210, 10084420, 20168840]

約数ペア:

[(1, 20168840), (2, 10084420), (4, 5042210), (5, 4033768), (8, 2521105), (10, 2016884), (20, 1008442), (40, 504221)]