21287834

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{4493}}^1$

素因数の和:4621

約数の個数: 16

約数和(自身を含む): 33651072

約数和(自身を除く): 12363238

約数列:

[1, 2, 23, 46, 103, 206, 2369, 4493, 4738, 8986, 103339, 206678, 462779, 925558, 10643917, 21287834]

約数ペア:

[(1, 21287834), (2, 10643917), (23, 925558), (46, 462779), (103, 206678), (206, 103339), (2369, 8986), (4493, 4738)]