20165991188

素因数分解:

$2^2\times 7^1\times {\mathrm{720213971}}^1$

素因数の和:720213982

約数の個数: 12

約数和(自身を含む): 40331982432

約数和(自身を除く): 20165991244

約数列:

[1, 2, 4, 7, 14, 28, 720213971, 1440427942, 2880855884, 5041497797, 10082995594, 20165991188]

約数ペア:

[(1, 20165991188), (2, 10082995594), (4, 5041497797), (7, 2880855884), (14, 1440427942), (28, 720213971)]