28001820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1$

素因数の和:89

約数の個数: 288

約数和(自身を含む): 107251200

約数和(自身を除く): 79249380

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 19, 20, 21, 22, 28, 29, 30, 33, 35, 38, 42, 44, 55, 57, 58, 60, 66, 70, 76, 77, 84, 87, 95, 105, 110, 114, 116, 121, 132, 133, 140, 145, 154, 165, 174, 190, 203, 209, 210, 220, 228, 231, 242, 266, 285, 290, 308, 319, 330, 348, 363, 380, 385, 399, 406, 418, 420, 435, 462, 484, 532, 551, 570, 580, 605, 609, 627, 638, 660, 665, 726, 770, 798, 812, 836, 847, 870, 924, 957, 1015, 1045, 1102, 1140, 1155, 1210, 1218, 1254, 1276, 1330, 1452, 1463, 1540, 1595, 1596, 1653, 1694, 1740, 1815, 1914, 1995, 2030, 2090, 2204, 2233, 2299, 2310, 2420, 2436, 2508, 2541, 2660, 2755, 2926, 3045, 3135, 3190, 3306, 3388, 3509, 3630, 3828, 3857, 3990, 4060, 4180, 4235, 4389, 4466, 4598, 4620, 4785, 5082, 5510, 5852, 6061, 6090, 6270, 6380, 6612, 6699, 6897, 7018, 7260, 7315, 7714, 7980, 8265, 8470, 8778, 8932, 9196, 9570, 10164, 10527, 11020, 11165, 11495, 11571, 12122, 12180, 12540, 12705, 13398, 13794, 14036, 14630, 15428, 16093, 16530, 16940, 17545, 17556, 18183, 19140, 19285, 21054, 21945, 22330, 22990, 23142, 24244, 24563, 25410, 26796, 27588, 29260, 30305, 32186, 33060, 33495, 34485, 35090, 36366, 38570, 42108, 42427, 43890, 44660, 45980, 46284, 48279, 49126, 50820, 52635, 57855, 60610, 64372, 66671, 66990, 68970, 70180, 72732, 73689, 77140, 80465, 84854, 87780, 90915, 96558, 98252, 105270, 115710, 121220, 122815, 127281, 133342, 133980, 137940, 147378, 160930, 169708, 181830, 193116, 200013, 210540, 212135, 231420, 241395, 245630, 254562, 266684, 294756, 321860, 333355, 363660, 368445, 400026, 424270, 466697, 482790, 491260, 509124, 636405, 666710, 736890, 800052, 848540, 933394, 965580, 1000065, 1272810, 1333420, 1400091, 1473780, 1866788, 2000130, 2333485, 2545620, 2800182, 4000260, 4666970, 5600364, 7000455, 9333940, 14000910, 28001820]

約数ペア:

[(1, 28001820), (2, 14000910), (3, 9333940), (4, 7000455), (5, 5600364), (6, 4666970), (7, 4000260), (10, 2800182), (11, 2545620), (12, 2333485), (14, 2000130), (15, 1866788), (19, 1473780), (20, 1400091), (21, 1333420), (22, 1272810), (28, 1000065), (29, 965580), (30, 933394), (33, 848540), (35, 800052), (38, 736890), (42, 666710), (44, 636405), (55, 509124), (57, 491260), (58, 482790), (60, 466697), (66, 424270), (70, 400026), (76, 368445), (77, 363660), (84, 333355), (87, 321860), (95, 294756), (105, 266684), (110, 254562), (114, 245630), (116, 241395), (121, 231420), (132, 212135), (133, 210540), (140, 200013), (145, 193116), (154, 181830), (165, 169708), (174, 160930), (190, 147378), (203, 137940), (209, 133980), (210, 133342), (220, 127281), (228, 122815), (231, 121220), (242, 115710), (266, 105270), (285, 98252), (290, 96558), (308, 90915), (319, 87780), (330, 84854), (348, 80465), (363, 77140), (380, 73689), (385, 72732), (399, 70180), (406, 68970), (418, 66990), (420, 66671), (435, 64372), (462, 60610), (484, 57855), (532, 52635), (551, 50820), (570, 49126), (580, 48279), (605, 46284), (609, 45980), (627, 44660), (638, 43890), (660, 42427), (665, 42108), (726, 38570), (770, 36366), (798, 35090), (812, 34485), (836, 33495), (847, 33060), (870, 32186), (924, 30305), (957, 29260), (1015, 27588), (1045, 26796), (1102, 25410), (1140, 24563), (1155, 24244), (1210, 23142), (1218, 22990), (1254, 22330), (1276, 21945), (1330, 21054), (1452, 19285), (1463, 19140), (1540, 18183), (1595, 17556), (1596, 17545), (1653, 16940), (1694, 16530), (1740, 16093), (1815, 15428), (1914, 14630), (1995, 14036), (2030, 13794), (2090, 13398), (2204, 12705), (2233, 12540), (2299, 12180), (2310, 12122), (2420, 11571), (2436, 11495), (2508, 11165), (2541, 11020), (2660, 10527), (2755, 10164), (2926, 9570), (3045, 9196), (3135, 8932), (3190, 8778), (3306, 8470), (3388, 8265), (3509, 7980), (3630, 7714), (3828, 7315), (3857, 7260), (3990, 7018), (4060, 6897), (4180, 6699), (4235, 6612), (4389, 6380), (4466, 6270), (4598, 6090), (4620, 6061), (4785, 5852), (5082, 5510)]