20813661

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{149}}^1$

素因数の和:266

約数の個数: 48

約数和(自身を含む): 35380800

約数和(自身を除く): 14567139

約数列:

[1, 3, 9, 11, 17, 33, 51, 83, 99, 149, 153, 187, 249, 447, 561, 747, 913, 1341, 1411, 1639, 1683, 2533, 2739, 4233, 4917, 7599, 8217, 12367, 12699, 14751, 15521, 22797, 27863, 37101, 46563, 83589, 111303, 136037, 139689, 210239, 250767, 408111, 630717, 1224333, 1892151, 2312629, 6937887, 20813661]

約数ペア:

[(1, 20813661), (3, 6937887), (9, 2312629), (11, 1892151), (17, 1224333), (33, 630717), (51, 408111), (83, 250767), (99, 210239), (149, 139689), (153, 136037), (187, 111303), (249, 83589), (447, 46563), (561, 37101), (747, 27863), (913, 22797), (1341, 15521), (1411, 14751), (1639, 12699), (1683, 12367), (2533, 8217), (2739, 7599), (4233, 4917)]