251015480

素因数分解:

$2^3\times 5^1\times {\mathrm{307}}^1\times {\mathrm{20441}}^1$

素因数の和:20759

約数の個数: 32

約数和(自身を含む): 566652240

約数和(自身を除く): 315636760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 307, 614, 1228, 1535, 2456, 3070, 6140, 12280, 20441, 40882, 81764, 102205, 163528, 204410, 408820, 817640, 6275387, 12550774, 25101548, 31376935, 50203096, 62753870, 125507740, 251015480]

約数ペア:

[(1, 251015480), (2, 125507740), (4, 62753870), (5, 50203096), (8, 31376935), (10, 25101548), (20, 12550774), (40, 6275387), (307, 817640), (614, 408820), (1228, 204410), (1535, 163528), (2456, 102205), (3070, 81764), (6140, 40882), (12280, 20441)]