21287926

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{42071}}^1$

素因数の和:42107

約数の個数: 16

約数和(自身を含む): 36350208

約数和(自身を除く): 15062282

約数列:

[1, 2, 11, 22, 23, 46, 253, 506, 42071, 84142, 462781, 925562, 967633, 1935266, 10643963, 21287926]

約数ペア:

[(1, 21287926), (2, 10643963), (11, 1935266), (22, 967633), (23, 925562), (46, 462781), (253, 84142), (506, 42071)]