201815420

素因数分解:

$2^2\times 5^1\times {\mathrm{10090771}}^1$

素因数の和:10090780

約数の個数: 12

約数和(自身を含む): 423812424

約数和(自身を除く): 221997004

約数列:

[1, 2, 4, 5, 10, 20, 10090771, 20181542, 40363084, 50453855, 100907710, 201815420]

約数ペア:

[(1, 201815420), (2, 100907710), (4, 50453855), (5, 40363084), (10, 20181542), (20, 10090771)]