28638720

素因数分解:

$2^9\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1$

素因数の和:153

約数の個数: 240

約数和(自身を含む): 109158192

約数和(自身を除く): 80519472

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 32, 33, 36, 40, 44, 45, 48, 55, 60, 64, 66, 72, 80, 88, 90, 96, 99, 110, 113, 120, 128, 132, 144, 160, 165, 176, 180, 192, 198, 220, 226, 240, 256, 264, 288, 320, 330, 339, 352, 360, 384, 396, 440, 452, 480, 495, 512, 528, 565, 576, 640, 660, 678, 704, 720, 768, 792, 880, 904, 960, 990, 1017, 1056, 1130, 1152, 1243, 1280, 1320, 1356, 1408, 1440, 1536, 1584, 1695, 1760, 1808, 1920, 1980, 2034, 2112, 2260, 2304, 2486, 2560, 2640, 2712, 2816, 2880, 3168, 3390, 3520, 3616, 3729, 3840, 3960, 4068, 4224, 4520, 4608, 4972, 5085, 5280, 5424, 5632, 5760, 6215, 6336, 6780, 7040, 7232, 7458, 7680, 7920, 8136, 8448, 9040, 9944, 10170, 10560, 10848, 11187, 11520, 12430, 12672, 13560, 14080, 14464, 14916, 15840, 16272, 16896, 18080, 18645, 19888, 20340, 21120, 21696, 22374, 23040, 24860, 25344, 27120, 28160, 28928, 29832, 31680, 32544, 36160, 37290, 39776, 40680, 42240, 43392, 44748, 49720, 50688, 54240, 55935, 57856, 59664, 63360, 65088, 72320, 74580, 79552, 81360, 84480, 86784, 89496, 99440, 108480, 111870, 119328, 126720, 130176, 144640, 149160, 159104, 162720, 173568, 178992, 198880, 216960, 223740, 238656, 253440, 260352, 289280, 298320, 318208, 325440, 357984, 397760, 433920, 447480, 477312, 520704, 596640, 636416, 650880, 715968, 795520, 867840, 894960, 954624, 1193280, 1301760, 1431936, 1591040, 1789920, 1909248, 2386560, 2603520, 2863872, 3182080, 3579840, 4773120, 5727744, 7159680, 9546240, 14319360, 28638720]

約数ペア:

[(1, 28638720), (2, 14319360), (3, 9546240), (4, 7159680), (5, 5727744), (6, 4773120), (8, 3579840), (9, 3182080), (10, 2863872), (11, 2603520), (12, 2386560), (15, 1909248), (16, 1789920), (18, 1591040), (20, 1431936), (22, 1301760), (24, 1193280), (30, 954624), (32, 894960), (33, 867840), (36, 795520), (40, 715968), (44, 650880), (45, 636416), (48, 596640), (55, 520704), (60, 477312), (64, 447480), (66, 433920), (72, 397760), (80, 357984), (88, 325440), (90, 318208), (96, 298320), (99, 289280), (110, 260352), (113, 253440), (120, 238656), (128, 223740), (132, 216960), (144, 198880), (160, 178992), (165, 173568), (176, 162720), (180, 159104), (192, 149160), (198, 144640), (220, 130176), (226, 126720), (240, 119328), (256, 111870), (264, 108480), (288, 99440), (320, 89496), (330, 86784), (339, 84480), (352, 81360), (360, 79552), (384, 74580), (396, 72320), (440, 65088), (452, 63360), (480, 59664), (495, 57856), (512, 55935), (528, 54240), (565, 50688), (576, 49720), (640, 44748), (660, 43392), (678, 42240), (704, 40680), (720, 39776), (768, 37290), (792, 36160), (880, 32544), (904, 31680), (960, 29832), (990, 28928), (1017, 28160), (1056, 27120), (1130, 25344), (1152, 24860), (1243, 23040), (1280, 22374), (1320, 21696), (1356, 21120), (1408, 20340), (1440, 19888), (1536, 18645), (1584, 18080), (1695, 16896), (1760, 16272), (1808, 15840), (1920, 14916), (1980, 14464), (2034, 14080), (2112, 13560), (2260, 12672), (2304, 12430), (2486, 11520), (2560, 11187), (2640, 10848), (2712, 10560), (2816, 10170), (2880, 9944), (3168, 9040), (3390, 8448), (3520, 8136), (3616, 7920), (3729, 7680), (3840, 7458), (3960, 7232), (4068, 7040), (4224, 6780), (4520, 6336), (4608, 6215), (4972, 5760), (5085, 5632), (5280, 5424)]