257787315

素因数分解:

$3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{41213}}^1$

素因数の和:41363

約数の個数: 24

約数和(自身を含む): 450056880

約数和(自身を除く): 192269565

約数列:

[1, 3, 5, 9, 15, 45, 139, 417, 695, 1251, 2085, 6255, 41213, 123639, 206065, 370917, 618195, 1854585, 5728607, 17185821, 28643035, 51557463, 85929105, 257787315]

約数ペア:

[(1, 257787315), (3, 85929105), (5, 51557463), (9, 28643035), (15, 17185821), (45, 5728607), (139, 1854585), (417, 618195), (695, 370917), (1251, 206065), (2085, 123639), (6255, 41213)]