20808515480

素因数分解:

$2^3\times 5^1\times {\mathrm{520212887}}^1$

素因数の和:520212898

約数の個数: 16

約数和(自身を含む): 46819159920

約数和(自身を除く): 26010644440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 520212887, 1040425774, 2080851548, 2601064435, 4161703096, 5202128870, 10404257740, 20808515480]

約数ペア:

[(1, 20808515480), (2, 10404257740), (4, 5202128870), (5, 4161703096), (8, 2601064435), (10, 2080851548), (20, 1040425774), (40, 520212887)]