205819820

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{101891}}^1$

素因数の和:102001

約数の個数: 24

約数和(自身を含む): 436505328

約数和(自身を除く): 230685508

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 101891, 203782, 407564, 509455, 1018910, 2037820, 10290991, 20581982, 41163964, 51454955, 102909910, 205819820]

約数ペア:

[(1, 205819820), (2, 102909910), (4, 51454955), (5, 41163964), (10, 20581982), (20, 10290991), (101, 2037820), (202, 1018910), (404, 509455), (505, 407564), (1010, 203782), (2020, 101891)]