81872640

素因数分解:

$2^8\times 3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1$

素因数の和:156

約数の個数: 288

約数和(自身を含む): 306109440

約数和(自身を除く): 224236800

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 27, 30, 32, 36, 40, 45, 46, 48, 54, 60, 64, 69, 72, 80, 90, 92, 96, 103, 108, 115, 120, 128, 135, 138, 144, 160, 180, 184, 192, 206, 207, 216, 230, 240, 256, 270, 276, 288, 309, 320, 345, 360, 368, 384, 412, 414, 432, 460, 480, 515, 540, 552, 576, 618, 621, 640, 690, 720, 736, 768, 824, 828, 864, 920, 927, 960, 1030, 1035, 1080, 1104, 1152, 1236, 1242, 1280, 1380, 1440, 1472, 1545, 1648, 1656, 1728, 1840, 1854, 1920, 2060, 2070, 2160, 2208, 2304, 2369, 2472, 2484, 2760, 2781, 2880, 2944, 3090, 3105, 3296, 3312, 3456, 3680, 3708, 3840, 4120, 4140, 4320, 4416, 4635, 4738, 4944, 4968, 5520, 5562, 5760, 5888, 6180, 6210, 6592, 6624, 6912, 7107, 7360, 7416, 8240, 8280, 8640, 8832, 9270, 9476, 9888, 9936, 11040, 11124, 11520, 11845, 12360, 12420, 13184, 13248, 13905, 14214, 14720, 14832, 16480, 16560, 17280, 17664, 18540, 18952, 19776, 19872, 21321, 22080, 22248, 23690, 24720, 24840, 26368, 26496, 27810, 28428, 29440, 29664, 32960, 33120, 34560, 35535, 37080, 37904, 39552, 39744, 42642, 44160, 44496, 47380, 49440, 49680, 52992, 55620, 56856, 59328, 63963, 65920, 66240, 71070, 74160, 75808, 79104, 79488, 85284, 88320, 88992, 94760, 98880, 99360, 106605, 111240, 113712, 118656, 127926, 131840, 132480, 142140, 148320, 151616, 158976, 170568, 177984, 189520, 197760, 198720, 213210, 222480, 227424, 237312, 255852, 264960, 284280, 296640, 303232, 319815, 341136, 355968, 379040, 395520, 397440, 426420, 444960, 454848, 511704, 568560, 593280, 606464, 639630, 682272, 711936, 758080, 794880, 852840, 889920, 909696, 1023408, 1137120, 1186560, 1279260, 1364544, 1516160, 1705680, 1779840, 1819392, 2046816, 2274240, 2558520, 2729088, 3032320, 3411360, 3559680, 4093632, 4548480, 5117040, 5458176, 6822720, 8187264, 9096960, 10234080, 13645440, 16374528, 20468160, 27290880, 40936320, 81872640]

約数ペア:

[(1, 81872640), (2, 40936320), (3, 27290880), (4, 20468160), (5, 16374528), (6, 13645440), (8, 10234080), (9, 9096960), (10, 8187264), (12, 6822720), (15, 5458176), (16, 5117040), (18, 4548480), (20, 4093632), (23, 3559680), (24, 3411360), (27, 3032320), (30, 2729088), (32, 2558520), (36, 2274240), (40, 2046816), (45, 1819392), (46, 1779840), (48, 1705680), (54, 1516160), (60, 1364544), (64, 1279260), (69, 1186560), (72, 1137120), (80, 1023408), (90, 909696), (92, 889920), (96, 852840), (103, 794880), (108, 758080), (115, 711936), (120, 682272), (128, 639630), (135, 606464), (138, 593280), (144, 568560), (160, 511704), (180, 454848), (184, 444960), (192, 426420), (206, 397440), (207, 395520), (216, 379040), (230, 355968), (240, 341136), (256, 319815), (270, 303232), (276, 296640), (288, 284280), (309, 264960), (320, 255852), (345, 237312), (360, 227424), (368, 222480), (384, 213210), (412, 198720), (414, 197760), (432, 189520), (460, 177984), (480, 170568), (515, 158976), (540, 151616), (552, 148320), (576, 142140), (618, 132480), (621, 131840), (640, 127926), (690, 118656), (720, 113712), (736, 111240), (768, 106605), (824, 99360), (828, 98880), (864, 94760), (920, 88992), (927, 88320), (960, 85284), (1030, 79488), (1035, 79104), (1080, 75808), (1104, 74160), (1152, 71070), (1236, 66240), (1242, 65920), (1280, 63963), (1380, 59328), (1440, 56856), (1472, 55620), (1545, 52992), (1648, 49680), (1656, 49440), (1728, 47380), (1840, 44496), (1854, 44160), (1920, 42642), (2060, 39744), (2070, 39552), (2160, 37904), (2208, 37080), (2304, 35535), (2369, 34560), (2472, 33120), (2484, 32960), (2760, 29664), (2781, 29440), (2880, 28428), (2944, 27810), (3090, 26496), (3105, 26368), (3296, 24840), (3312, 24720), (3456, 23690), (3680, 22248), (3708, 22080), (3840, 21321), (4120, 19872), (4140, 19776), (4320, 18952), (4416, 18540), (4635, 17664), (4738, 17280), (4944, 16560), (4968, 16480), (5520, 14832), (5562, 14720), (5760, 14214), (5888, 13905), (6180, 13248), (6210, 13184), (6592, 12420), (6624, 12360), (6912, 11845), (7107, 11520), (7360, 11124), (7416, 11040), (8240, 9936), (8280, 9888), (8640, 9476), (8832, 9270)]