21257834

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{109}}^1\times {\mathrm{577}}^1$

素因数の和:714

約数の個数: 24

約数和(自身を含む): 34905420

約数和(自身を除く): 13647586

約数列:

[1, 2, 13, 26, 109, 169, 218, 338, 577, 1154, 1417, 2834, 7501, 15002, 18421, 36842, 62893, 97513, 125786, 195026, 817609, 1635218, 10628917, 21257834]

約数ペア:

[(1, 21257834), (2, 10628917), (13, 1635218), (26, 817609), (109, 195026), (169, 125786), (218, 97513), (338, 62893), (577, 36842), (1154, 18421), (1417, 15002), (2834, 7501)]