19897768

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{1307}}^1$

素因数の和:1497

約数の個数: 32

約数和(自身を含む): 40966560

約数和(自身を除く): 21068792

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 173, 346, 692, 1307, 1384, 1903, 2614, 3806, 5228, 7612, 10456, 14377, 15224, 28754, 57508, 115016, 226111, 452222, 904444, 1808888, 2487221, 4974442, 9948884, 19897768]

約数ペア:

[(1, 19897768), (2, 9948884), (4, 4974442), (8, 2487221), (11, 1808888), (22, 904444), (44, 452222), (88, 226111), (173, 115016), (346, 57508), (692, 28754), (1307, 15224), (1384, 14377), (1903, 10456), (2614, 7612), (3806, 5228)]