21131576

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{1307}}^1$

素因数の和:1403

約数の個数: 32

約数和(自身を含む): 41437440

約数和(自身を除く): 20305864

約数列:

[1, 2, 4, 8, 43, 47, 86, 94, 172, 188, 344, 376, 1307, 2021, 2614, 4042, 5228, 8084, 10456, 16168, 56201, 61429, 112402, 122858, 224804, 245716, 449608, 491432, 2641447, 5282894, 10565788, 21131576]

約数ペア:

[(1, 21131576), (2, 10565788), (4, 5282894), (8, 2641447), (43, 491432), (47, 449608), (86, 245716), (94, 224804), (172, 122858), (188, 112402), (344, 61429), (376, 56201), (1307, 16168), (2021, 10456), (2614, 8084), (4042, 5228)]