21009670

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{190997}}^1$

素因数の和:191015

約数の個数: 16

約数和(自身を含む): 41255568

約数和(自身を除く): 20245898

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 190997, 381994, 954985, 1909970, 2100967, 4201934, 10504835, 21009670]

約数ペア:

[(1, 21009670), (2, 10504835), (5, 4201934), (10, 2100967), (11, 1909970), (22, 954985), (55, 381994), (110, 190997)]