20938000105

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1\times {\mathrm{2179}}^1$

素因数の和:2494

約数の個数: 64

約数和(自身を含む): 29834956800

約数和(自身を除く): 8896956695

約数列:

[1, 5, 11, 17, 43, 55, 85, 187, 215, 239, 473, 731, 935, 1195, 2179, 2365, 2629, 3655, 4063, 8041, 10277, 10895, 13145, 20315, 23969, 37043, 40205, 44693, 51385, 93697, 113047, 119845, 174709, 185215, 223465, 407473, 468485, 520781, 565235, 873545, 1030667, 1592849, 1921799, 2037365, 2603905, 5153335, 5728591, 7964245, 8853277, 9608995, 17521339, 22393583, 28642955, 44266385, 87606695, 97386047, 111967915, 246329413, 380690911, 486930235, 1231647065, 1903454555, 4187600021, 20938000105]

約数ペア:

[(1, 20938000105), (5, 4187600021), (11, 1903454555), (17, 1231647065), (43, 486930235), (55, 380690911), (85, 246329413), (187, 111967915), (215, 97386047), (239, 87606695), (473, 44266385), (731, 28642955), (935, 22393583), (1195, 17521339), (2179, 9608995), (2365, 8853277), (2629, 7964245), (3655, 5728591), (4063, 5153335), (8041, 2603905), (10277, 2037365), (10895, 1921799), (13145, 1592849), (20315, 1030667), (23969, 873545), (37043, 565235), (40205, 520781), (44693, 468485), (51385, 407473), (93697, 223465), (113047, 185215), (119845, 174709)]