21225531

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{4447}}^1$

素因数の和:4530

約数の個数: 16

約数和(自身を含む): 29748224

約数和(自身を除く): 8522693

約数列:

[1, 3, 37, 43, 111, 129, 1591, 4447, 4773, 13341, 164539, 191221, 493617, 573663, 7075177, 21225531]

約数ペア:

[(1, 21225531), (3, 7075177), (37, 573663), (43, 493617), (111, 191221), (129, 164539), (1591, 13341), (4447, 4773)]