21338836

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{1279}}^1$

素因数の和:1423

約数の個数: 24

約数和(自身を含む): 38635520

約数和(自身を除く): 17296684

約数列:

[1, 2, 4, 43, 86, 97, 172, 194, 388, 1279, 2558, 4171, 5116, 8342, 16684, 54997, 109994, 124063, 219988, 248126, 496252, 5334709, 10669418, 21338836]

約数ペア:

[(1, 21338836), (2, 10669418), (4, 5334709), (43, 496252), (86, 248126), (97, 219988), (172, 124063), (194, 109994), (388, 54997), (1279, 16684), (2558, 8342), (4171, 5116)]