28999971

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1$

素因数の和:106

約数の個数: 128

約数和(自身を含む): 61286400

約数和(自身を除く): 32286429

約数列:

[1, 3, 7, 9, 11, 13, 21, 27, 29, 33, 37, 39, 63, 77, 87, 91, 99, 111, 117, 143, 189, 203, 231, 259, 261, 273, 297, 319, 333, 351, 377, 407, 429, 481, 609, 693, 777, 783, 819, 957, 999, 1001, 1073, 1131, 1221, 1287, 1443, 1827, 2079, 2233, 2331, 2457, 2639, 2849, 2871, 3003, 3219, 3367, 3393, 3663, 3861, 4147, 4329, 5291, 5481, 6699, 6993, 7511, 7917, 8547, 8613, 9009, 9657, 10101, 10179, 10989, 11803, 12441, 12987, 13949, 15873, 20097, 22533, 23751, 25641, 27027, 28971, 29029, 30303, 35409, 37037, 37323, 41847, 47619, 60291, 67599, 71253, 76923, 82621, 87087, 90909, 97643, 106227, 111111, 111969, 125541, 142857, 153439, 202797, 247863, 261261, 292929, 318681, 333333, 376623, 460317, 743589, 783783, 878787, 999999, 1074073, 1380951, 2230767, 2636361, 3222219, 4142853, 9666657, 28999971]

約数ペア:

[(1, 28999971), (3, 9666657), (7, 4142853), (9, 3222219), (11, 2636361), (13, 2230767), (21, 1380951), (27, 1074073), (29, 999999), (33, 878787), (37, 783783), (39, 743589), (63, 460317), (77, 376623), (87, 333333), (91, 318681), (99, 292929), (111, 261261), (117, 247863), (143, 202797), (189, 153439), (203, 142857), (231, 125541), (259, 111969), (261, 111111), (273, 106227), (297, 97643), (319, 90909), (333, 87087), (351, 82621), (377, 76923), (407, 71253), (429, 67599), (481, 60291), (609, 47619), (693, 41847), (777, 37323), (783, 37037), (819, 35409), (957, 30303), (999, 29029), (1001, 28971), (1073, 27027), (1131, 25641), (1221, 23751), (1287, 22533), (1443, 20097), (1827, 15873), (2079, 13949), (2233, 12987), (2331, 12441), (2457, 11803), (2639, 10989), (2849, 10179), (2871, 10101), (3003, 9657), (3219, 9009), (3367, 8613), (3393, 8547), (3663, 7917), (3861, 7511), (4147, 6993), (4329, 6699), (5291, 5481)]