21001458

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{81401}}^1$

素因数の和:81449

約数の個数: 16

約数和(自身を含む): 42980256

約数和(自身を除く): 21978798

約数列:

[1, 2, 3, 6, 43, 86, 129, 258, 81401, 162802, 244203, 488406, 3500243, 7000486, 10500729, 21001458]

約数ペア:

[(1, 21001458), (2, 10500729), (3, 7000486), (6, 3500243), (43, 488406), (86, 244203), (129, 162802), (258, 81401)]