21581693

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{809}}^1$

素因数の和:956

約数の個数: 16

約数和(自身を含む): 25608960

約数和(自身を除く): 4027267

約数列:

[1, 7, 37, 103, 259, 721, 809, 3811, 5663, 26677, 29933, 83327, 209531, 583289, 3083099, 21581693]

約数ペア:

[(1, 21581693), (7, 3083099), (37, 583289), (103, 209531), (259, 83327), (721, 29933), (809, 26677), (3811, 5663)]