19918378

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{317}}^1\times {\mathrm{353}}^1$

素因数の和:761

約数の個数: 16

約数和(自身を含む): 30394440

約数和(自身を除く): 10476062

約数列:

[1, 2, 89, 178, 317, 353, 634, 706, 28213, 31417, 56426, 62834, 111901, 223802, 9959189, 19918378]

約数ペア:

[(1, 19918378), (2, 9959189), (89, 223802), (178, 111901), (317, 62834), (353, 56426), (634, 31417), (706, 28213)]