21573772

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{490313}}^1$

素因数の和:490328

約数の個数: 12

約数和(自身を含む): 41186376

約数和(自身を除く): 19612604

約数列:

[1, 2, 4, 11, 22, 44, 490313, 980626, 1961252, 5393443, 10786886, 21573772]

約数ペア:

[(1, 21573772), (2, 10786886), (4, 5393443), (11, 1961252), (22, 980626), (44, 490313)]