20215804

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31391}}^1$

素因数の和:31425

約数の個数: 24

約数和(自身を含む): 42190848

約数和(自身を除く): 21975044

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644, 31391, 62782, 125564, 219737, 439474, 721993, 878948, 1443986, 2887972, 5053951, 10107902, 20215804]

約数ペア:

[(1, 20215804), (2, 10107902), (4, 5053951), (7, 2887972), (14, 1443986), (23, 878948), (28, 721993), (46, 439474), (92, 219737), (161, 125564), (322, 62782), (644, 31391)]