20515472

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{29819}}^1$

素因数の和:29870

約数の個数: 20

約数和(自身を含む): 40674480

約数和(自身を除く): 20159008

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 29819, 59638, 119276, 238552, 477104, 1282217, 2564434, 5128868, 10257736, 20515472]

約数ペア:

[(1, 20515472), (2, 10257736), (4, 5128868), (8, 2564434), (16, 1282217), (43, 477104), (86, 238552), (172, 119276), (344, 59638), (688, 29819)]