20905218

素因数分解:

$2^1\times 3^2\times {\mathrm{1161401}}^1$

素因数の和:1161409

約数の個数: 12

約数和(自身を含む): 45294678

約数和(自身を除く): 24389460

約数列:

[1, 2, 3, 6, 9, 18, 1161401, 2322802, 3484203, 6968406, 10452609, 20905218]

約数ペア:

[(1, 20905218), (2, 10452609), (3, 6968406), (6, 3484203), (9, 2322802), (18, 1161401)]