81515520

素因数分解:

$2^{10}\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1$

素因数の和:121

約数の個数: 264

約数和(自身を含む): 296978760

約数和(自身を除く): 215463240

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 29, 30, 32, 36, 40, 45, 48, 58, 60, 61, 64, 72, 80, 87, 90, 96, 116, 120, 122, 128, 144, 145, 160, 174, 180, 183, 192, 232, 240, 244, 256, 261, 288, 290, 305, 320, 348, 360, 366, 384, 435, 464, 480, 488, 512, 522, 549, 576, 580, 610, 640, 696, 720, 732, 768, 870, 915, 928, 960, 976, 1024, 1044, 1098, 1152, 1160, 1220, 1280, 1305, 1392, 1440, 1464, 1536, 1740, 1769, 1830, 1856, 1920, 1952, 2088, 2196, 2304, 2320, 2440, 2560, 2610, 2745, 2784, 2880, 2928, 3072, 3480, 3538, 3660, 3712, 3840, 3904, 4176, 4392, 4608, 4640, 4880, 5120, 5220, 5307, 5490, 5568, 5760, 5856, 6960, 7076, 7320, 7424, 7680, 7808, 8352, 8784, 8845, 9216, 9280, 9760, 10440, 10614, 10980, 11136, 11520, 11712, 13920, 14152, 14640, 14848, 15360, 15616, 15921, 16704, 17568, 17690, 18560, 19520, 20880, 21228, 21960, 22272, 23040, 23424, 26535, 27840, 28304, 29280, 29696, 31232, 31842, 33408, 35136, 35380, 37120, 39040, 41760, 42456, 43920, 44544, 46080, 46848, 53070, 55680, 56608, 58560, 62464, 63684, 66816, 70272, 70760, 74240, 78080, 79605, 83520, 84912, 87840, 89088, 93696, 106140, 111360, 113216, 117120, 127368, 133632, 140544, 141520, 148480, 156160, 159210, 167040, 169824, 175680, 187392, 212280, 222720, 226432, 234240, 254736, 267264, 281088, 283040, 312320, 318420, 334080, 339648, 351360, 424560, 445440, 452864, 468480, 509472, 562176, 566080, 636840, 668160, 679296, 702720, 849120, 905728, 936960, 1018944, 1132160, 1273680, 1336320, 1358592, 1405440, 1698240, 1811456, 2037888, 2264320, 2547360, 2717184, 2810880, 3396480, 4075776, 4528640, 5094720, 5434368, 6792960, 8151552, 9057280, 10189440, 13585920, 16303104, 20378880, 27171840, 40757760, 81515520]

約数ペア:

[(1, 81515520), (2, 40757760), (3, 27171840), (4, 20378880), (5, 16303104), (6, 13585920), (8, 10189440), (9, 9057280), (10, 8151552), (12, 6792960), (15, 5434368), (16, 5094720), (18, 4528640), (20, 4075776), (24, 3396480), (29, 2810880), (30, 2717184), (32, 2547360), (36, 2264320), (40, 2037888), (45, 1811456), (48, 1698240), (58, 1405440), (60, 1358592), (61, 1336320), (64, 1273680), (72, 1132160), (80, 1018944), (87, 936960), (90, 905728), (96, 849120), (116, 702720), (120, 679296), (122, 668160), (128, 636840), (144, 566080), (145, 562176), (160, 509472), (174, 468480), (180, 452864), (183, 445440), (192, 424560), (232, 351360), (240, 339648), (244, 334080), (256, 318420), (261, 312320), (288, 283040), (290, 281088), (305, 267264), (320, 254736), (348, 234240), (360, 226432), (366, 222720), (384, 212280), (435, 187392), (464, 175680), (480, 169824), (488, 167040), (512, 159210), (522, 156160), (549, 148480), (576, 141520), (580, 140544), (610, 133632), (640, 127368), (696, 117120), (720, 113216), (732, 111360), (768, 106140), (870, 93696), (915, 89088), (928, 87840), (960, 84912), (976, 83520), (1024, 79605), (1044, 78080), (1098, 74240), (1152, 70760), (1160, 70272), (1220, 66816), (1280, 63684), (1305, 62464), (1392, 58560), (1440, 56608), (1464, 55680), (1536, 53070), (1740, 46848), (1769, 46080), (1830, 44544), (1856, 43920), (1920, 42456), (1952, 41760), (2088, 39040), (2196, 37120), (2304, 35380), (2320, 35136), (2440, 33408), (2560, 31842), (2610, 31232), (2745, 29696), (2784, 29280), (2880, 28304), (2928, 27840), (3072, 26535), (3480, 23424), (3538, 23040), (3660, 22272), (3712, 21960), (3840, 21228), (3904, 20880), (4176, 19520), (4392, 18560), (4608, 17690), (4640, 17568), (4880, 16704), (5120, 15921), (5220, 15616), (5307, 15360), (5490, 14848), (5568, 14640), (5760, 14152), (5856, 13920), (6960, 11712), (7076, 11520), (7320, 11136), (7424, 10980), (7680, 10614), (7808, 10440), (8352, 9760), (8784, 9280), (8845, 9216)]