281361260

素因数分解:

$2^2\times 5^1\times {\mathrm{661}}^1\times {\mathrm{21283}}^1$

素因数の和:21953

約数の個数: 24

約数和(自身を含む): 591780336

約数和(自身を除く): 310419076

約数列:

[1, 2, 4, 5, 10, 20, 661, 1322, 2644, 3305, 6610, 13220, 21283, 42566, 85132, 106415, 212830, 425660, 14068063, 28136126, 56272252, 70340315, 140680630, 281361260]

約数ペア:

[(1, 281361260), (2, 140680630), (4, 70340315), (5, 56272252), (10, 28136126), (20, 14068063), (661, 425660), (1322, 212830), (2644, 106415), (3305, 85132), (6610, 42566), (13220, 21283)]