639959040

素因数分解:

$2^{16}\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1$

素因数の和:81

約数の個数: 408

約数和(自身を含む): 2617225728

約数和(自身を除く): 1977266688

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 31, 32, 35, 36, 40, 42, 45, 48, 56, 60, 62, 63, 64, 70, 72, 80, 84, 90, 93, 96, 105, 112, 120, 124, 126, 128, 140, 144, 155, 160, 168, 180, 186, 192, 210, 217, 224, 240, 248, 252, 256, 279, 280, 288, 310, 315, 320, 336, 360, 372, 384, 420, 434, 448, 465, 480, 496, 504, 512, 558, 560, 576, 620, 630, 640, 651, 672, 720, 744, 768, 840, 868, 896, 930, 960, 992, 1008, 1024, 1085, 1116, 1120, 1152, 1240, 1260, 1280, 1302, 1344, 1395, 1440, 1488, 1536, 1680, 1736, 1792, 1860, 1920, 1953, 1984, 2016, 2048, 2170, 2232, 2240, 2304, 2480, 2520, 2560, 2604, 2688, 2790, 2880, 2976, 3072, 3255, 3360, 3472, 3584, 3720, 3840, 3906, 3968, 4032, 4096, 4340, 4464, 4480, 4608, 4960, 5040, 5120, 5208, 5376, 5580, 5760, 5952, 6144, 6510, 6720, 6944, 7168, 7440, 7680, 7812, 7936, 8064, 8192, 8680, 8928, 8960, 9216, 9765, 9920, 10080, 10240, 10416, 10752, 11160, 11520, 11904, 12288, 13020, 13440, 13888, 14336, 14880, 15360, 15624, 15872, 16128, 16384, 17360, 17856, 17920, 18432, 19530, 19840, 20160, 20480, 20832, 21504, 22320, 23040, 23808, 24576, 26040, 26880, 27776, 28672, 29760, 30720, 31248, 31744, 32256, 32768, 34720, 35712, 35840, 36864, 39060, 39680, 40320, 40960, 41664, 43008, 44640, 46080, 47616, 49152, 52080, 53760, 55552, 57344, 59520, 61440, 62496, 63488, 64512, 65536, 69440, 71424, 71680, 73728, 78120, 79360, 80640, 81920, 83328, 86016, 89280, 92160, 95232, 98304, 104160, 107520, 111104, 114688, 119040, 122880, 124992, 126976, 129024, 138880, 142848, 143360, 147456, 156240, 158720, 161280, 163840, 166656, 172032, 178560, 184320, 190464, 196608, 208320, 215040, 222208, 229376, 238080, 245760, 249984, 253952, 258048, 277760, 285696, 286720, 294912, 312480, 317440, 322560, 327680, 333312, 344064, 357120, 368640, 380928, 416640, 430080, 444416, 458752, 476160, 491520, 499968, 507904, 516096, 555520, 571392, 573440, 589824, 624960, 634880, 645120, 666624, 688128, 714240, 737280, 761856, 833280, 860160, 888832, 952320, 983040, 999936, 1015808, 1032192, 1111040, 1142784, 1146880, 1249920, 1269760, 1290240, 1333248, 1376256, 1428480, 1474560, 1523712, 1666560, 1720320, 1777664, 1904640, 1999872, 2031616, 2064384, 2222080, 2285568, 2293760, 2499840, 2539520, 2580480, 2666496, 2856960, 2949120, 3047424, 3333120, 3440640, 3555328, 3809280, 3999744, 4128768, 4444160, 4571136, 4999680, 5079040, 5160960, 5332992, 5713920, 6094848, 6666240, 6881280, 7110656, 7618560, 7999488, 8888320, 9142272, 9999360, 10158080, 10321920, 10665984, 11427840, 13332480, 14221312, 15237120, 15998976, 17776640, 18284544, 19998720, 20643840, 21331968, 22855680, 26664960, 30474240, 31997952, 35553280, 39997440, 42663936, 45711360, 53329920, 63995904, 71106560, 79994880, 91422720, 106659840, 127991808, 159989760, 213319680, 319979520, 639959040]

約数ペア:

[(1, 639959040), (2, 319979520), (3, 213319680), (4, 159989760), (5, 127991808), (6, 106659840), (7, 91422720), (8, 79994880), (9, 71106560), (10, 63995904), (12, 53329920), (14, 45711360), (15, 42663936), (16, 39997440), (18, 35553280), (20, 31997952), (21, 30474240), (24, 26664960), (28, 22855680), (30, 21331968), (31, 20643840), (32, 19998720), (35, 18284544), (36, 17776640), (40, 15998976), (42, 15237120), (45, 14221312), (48, 13332480), (56, 11427840), (60, 10665984), (62, 10321920), (63, 10158080), (64, 9999360), (70, 9142272), (72, 8888320), (80, 7999488), (84, 7618560), (90, 7110656), (93, 6881280), (96, 6666240), (105, 6094848), (112, 5713920), (120, 5332992), (124, 5160960), (126, 5079040), (128, 4999680), (140, 4571136), (144, 4444160), (155, 4128768), (160, 3999744), (168, 3809280), (180, 3555328), (186, 3440640), (192, 3333120), (210, 3047424), (217, 2949120), (224, 2856960), (240, 2666496), (248, 2580480), (252, 2539520), (256, 2499840), (279, 2293760), (280, 2285568), (288, 2222080), (310, 2064384), (315, 2031616), (320, 1999872), (336, 1904640), (360, 1777664), (372, 1720320), (384, 1666560), (420, 1523712), (434, 1474560), (448, 1428480), (465, 1376256), (480, 1333248), (496, 1290240), (504, 1269760), (512, 1249920), (558, 1146880), (560, 1142784), (576, 1111040), (620, 1032192), (630, 1015808), (640, 999936), (651, 983040), (672, 952320), (720, 888832), (744, 860160), (768, 833280), (840, 761856), (868, 737280), (896, 714240), (930, 688128), (960, 666624), (992, 645120), (1008, 634880), (1024, 624960), (1085, 589824), (1116, 573440), (1120, 571392), (1152, 555520), (1240, 516096), (1260, 507904), (1280, 499968), (1302, 491520), (1344, 476160), (1395, 458752), (1440, 444416), (1488, 430080), (1536, 416640), (1680, 380928), (1736, 368640), (1792, 357120), (1860, 344064), (1920, 333312), (1953, 327680), (1984, 322560), (2016, 317440), (2048, 312480), (2170, 294912), (2232, 286720), (2240, 285696), (2304, 277760), (2480, 258048), (2520, 253952), (2560, 249984), (2604, 245760), (2688, 238080), (2790, 229376), (2880, 222208), (2976, 215040), (3072, 208320), (3255, 196608), (3360, 190464), (3472, 184320), (3584, 178560), (3720, 172032), (3840, 166656), (3906, 163840), (3968, 161280), (4032, 158720), (4096, 156240), (4340, 147456), (4464, 143360), (4480, 142848), (4608, 138880), (4960, 129024), (5040, 126976), (5120, 124992), (5208, 122880), (5376, 119040), (5580, 114688), (5760, 111104), (5952, 107520), (6144, 104160), (6510, 98304), (6720, 95232), (6944, 92160), (7168, 89280), (7440, 86016), (7680, 83328), (7812, 81920), (7936, 80640), (8064, 79360), (8192, 78120), (8680, 73728), (8928, 71680), (8960, 71424), (9216, 69440), (9765, 65536), (9920, 64512), (10080, 63488), (10240, 62496), (10416, 61440), (10752, 59520), (11160, 57344), (11520, 55552), (11904, 53760), (12288, 52080), (13020, 49152), (13440, 47616), (13888, 46080), (14336, 44640), (14880, 43008), (15360, 41664), (15624, 40960), (15872, 40320), (16128, 39680), (16384, 39060), (17360, 36864), (17856, 35840), (17920, 35712), (18432, 34720), (19530, 32768), (19840, 32256), (20160, 31744), (20480, 31248), (20832, 30720), (21504, 29760), (22320, 28672), (23040, 27776), (23808, 26880), (24576, 26040)]