20811208

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{1367}}^1$

素因数の和:1557

約数の個数: 32

約数和(自身を含む): 42845760

約数和(自身を除く): 22034552

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 173, 346, 692, 1367, 1384, 1903, 2734, 3806, 5468, 7612, 10936, 15037, 15224, 30074, 60148, 120296, 236491, 472982, 945964, 1891928, 2601401, 5202802, 10405604, 20811208]

約数ペア:

[(1, 20811208), (2, 10405604), (4, 5202802), (8, 2601401), (11, 1891928), (22, 945964), (44, 472982), (88, 236491), (173, 120296), (346, 60148), (692, 30074), (1367, 15224), (1384, 15037), (1903, 10936), (2734, 7612), (3806, 5468)]