21071118

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{81671}}^1$

素因数の和:81719

約数の個数: 16

約数和(自身を含む): 43122816

約数和(自身を除く): 22051698

約数列:

[1, 2, 3, 6, 43, 86, 129, 258, 81671, 163342, 245013, 490026, 3511853, 7023706, 10535559, 21071118]

約数ペア:

[(1, 21071118), (2, 10535559), (3, 7023706), (6, 3511853), (43, 490026), (86, 245013), (129, 163342), (258, 81671)]