21809282

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{90121}}^1$

素因数の和:90145

約数の個数: 12

約数和(自身を含む): 35958678

約数和(自身を除く): 14149396

約数列:

[1, 2, 11, 22, 121, 242, 90121, 180242, 991331, 1982662, 10904641, 21809282]

約数ペア:

[(1, 21809282), (2, 10904641), (11, 1982662), (22, 991331), (121, 180242), (242, 90121)]