21497564

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{311}}^1\times {\mathrm{1571}}^1$

素因数の和:1897

約数の個数: 24

約数和(自身を含む): 41198976

約数和(自身を除く): 19701412

約数列:

[1, 2, 4, 11, 22, 44, 311, 622, 1244, 1571, 3142, 3421, 6284, 6842, 13684, 17281, 34562, 69124, 488581, 977162, 1954324, 5374391, 10748782, 21497564]

約数ペア:

[(1, 21497564), (2, 10748782), (4, 5374391), (11, 1954324), (22, 977162), (44, 488581), (311, 69124), (622, 34562), (1244, 17281), (1571, 13684), (3142, 6842), (3421, 6284)]