21810131

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{787}}^1$

素因数の和:938

約数の個数: 16

約数和(自身を含む): 25871616

約数和(自身を除く): 4061485

約数列:

[1, 7, 37, 107, 259, 749, 787, 3959, 5509, 27713, 29119, 84209, 203833, 589463, 3115733, 21810131]

約数ペア:

[(1, 21810131), (7, 3115733), (37, 589463), (107, 203833), (259, 84209), (749, 29119), (787, 27713), (3959, 5509)]