20491472

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{31237}}^1$

素因数の和:31286

約数の個数: 20

約数和(自身を含む): 40671876

約数和(自身を除く): 20180404

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 31237, 62474, 124948, 249896, 499792, 1280717, 2561434, 5122868, 10245736, 20491472]

約数ペア:

[(1, 20491472), (2, 10245736), (4, 5122868), (8, 2561434), (16, 1280717), (41, 499792), (82, 249896), (164, 124948), (328, 62474), (656, 31237)]