20806456

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{263}}^1$

素因数の和:340

約数の個数: 64

約数和(自身を含む): 45619200

約数和(自身を除く): 24812744

約数列:

[1, 2, 4, 8, 11, 22, 29, 31, 44, 58, 62, 88, 116, 124, 232, 248, 263, 319, 341, 526, 638, 682, 899, 1052, 1276, 1364, 1798, 2104, 2552, 2728, 2893, 3596, 5786, 7192, 7627, 8153, 9889, 11572, 15254, 16306, 19778, 23144, 30508, 32612, 39556, 61016, 65224, 79112, 83897, 89683, 167794, 179366, 236437, 335588, 358732, 472874, 671176, 717464, 945748, 1891496, 2600807, 5201614, 10403228, 20806456]

約数ペア:

[(1, 20806456), (2, 10403228), (4, 5201614), (8, 2600807), (11, 1891496), (22, 945748), (29, 717464), (31, 671176), (44, 472874), (58, 358732), (62, 335588), (88, 236437), (116, 179366), (124, 167794), (232, 89683), (248, 83897), (263, 79112), (319, 65224), (341, 61016), (526, 39556), (638, 32612), (682, 30508), (899, 23144), (1052, 19778), (1276, 16306), (1364, 15254), (1798, 11572), (2104, 9889), (2552, 8153), (2728, 7627), (2893, 7192), (3596, 5786)]