20798008

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1777}}^1$

素因数の和:1820

約数の個数: 64

約数和(自身を含む): 51206400

約数和(自身を除く): 30408392

約数列:

[1, 2, 4, 7, 8, 11, 14, 19, 22, 28, 38, 44, 56, 76, 77, 88, 133, 152, 154, 209, 266, 308, 418, 532, 616, 836, 1064, 1463, 1672, 1777, 2926, 3554, 5852, 7108, 11704, 12439, 14216, 19547, 24878, 33763, 39094, 49756, 67526, 78188, 99512, 135052, 136829, 156376, 236341, 270104, 273658, 371393, 472682, 547316, 742786, 945364, 1094632, 1485572, 1890728, 2599751, 2971144, 5199502, 10399004, 20798008]

約数ペア:

[(1, 20798008), (2, 10399004), (4, 5199502), (7, 2971144), (8, 2599751), (11, 1890728), (14, 1485572), (19, 1094632), (22, 945364), (28, 742786), (38, 547316), (44, 472682), (56, 371393), (76, 273658), (77, 270104), (88, 236341), (133, 156376), (152, 136829), (154, 135052), (209, 99512), (266, 78188), (308, 67526), (418, 49756), (532, 39094), (616, 33763), (836, 24878), (1064, 19547), (1463, 14216), (1672, 12439), (1777, 11704), (2926, 7108), (3554, 5852)]