20322540

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{127}}^2$

素因数の和:276

約数の個数: 108

約数和(自身を含む): 71010576

約数和(自身を除く): 50688036

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 127, 140, 180, 210, 252, 254, 315, 381, 420, 508, 630, 635, 762, 889, 1143, 1260, 1270, 1524, 1778, 1905, 2286, 2540, 2667, 3556, 3810, 4445, 4572, 5334, 5715, 7620, 8001, 8890, 10668, 11430, 13335, 16002, 16129, 17780, 22860, 26670, 32004, 32258, 40005, 48387, 53340, 64516, 80010, 80645, 96774, 112903, 145161, 160020, 161290, 193548, 225806, 241935, 290322, 322580, 338709, 451612, 483870, 564515, 580644, 677418, 725805, 967740, 1016127, 1129030, 1354836, 1451610, 1693545, 2032254, 2258060, 2903220, 3387090, 4064508, 5080635, 6774180, 10161270, 20322540]

約数ペア:

[(1, 20322540), (2, 10161270), (3, 6774180), (4, 5080635), (5, 4064508), (6, 3387090), (7, 2903220), (9, 2258060), (10, 2032254), (12, 1693545), (14, 1451610), (15, 1354836), (18, 1129030), (20, 1016127), (21, 967740), (28, 725805), (30, 677418), (35, 580644), (36, 564515), (42, 483870), (45, 451612), (60, 338709), (63, 322580), (70, 290322), (84, 241935), (90, 225806), (105, 193548), (126, 161290), (127, 160020), (140, 145161), (180, 112903), (210, 96774), (252, 80645), (254, 80010), (315, 64516), (381, 53340), (420, 48387), (508, 40005), (630, 32258), (635, 32004), (762, 26670), (889, 22860), (1143, 17780), (1260, 16129), (1270, 16002), (1524, 13335), (1778, 11430), (1905, 10668), (2286, 8890), (2540, 8001), (2667, 7620), (3556, 5715), (3810, 5334), (4445, 4572)]