20163994420

素因数分解:

$2^2\times 5^1\times {\mathrm{1008199721}}^1$

素因数の和:1008199730

約数の個数: 12

約数和(自身を含む): 42344388324

約数和(自身を除く): 22180393904

約数列:

[1, 2, 4, 5, 10, 20, 1008199721, 2016399442, 4032798884, 5040998605, 10081997210, 20163994420]

約数ペア:

[(1, 20163994420), (2, 10081997210), (4, 5040998605), (5, 4032798884), (10, 2016399442), (20, 1008199721)]