81661440

素因数分解:

$2^9\times 3^1\times 5^1\times 7^3\times {\mathrm{31}}^1$

素因数の和:78

約数の個数: 320

約数和(自身を含む): 314265600

約数和(自身を除く): 232604160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 31, 32, 35, 40, 42, 48, 49, 56, 60, 62, 64, 70, 80, 84, 93, 96, 98, 105, 112, 120, 124, 128, 140, 147, 155, 160, 168, 186, 192, 196, 210, 217, 224, 240, 245, 248, 256, 280, 294, 310, 320, 336, 343, 372, 384, 392, 420, 434, 448, 465, 480, 490, 496, 512, 560, 588, 620, 640, 651, 672, 686, 735, 744, 768, 784, 840, 868, 896, 930, 960, 980, 992, 1029, 1085, 1120, 1176, 1240, 1280, 1302, 1344, 1372, 1470, 1488, 1519, 1536, 1568, 1680, 1715, 1736, 1792, 1860, 1920, 1960, 1984, 2058, 2170, 2240, 2352, 2480, 2560, 2604, 2688, 2744, 2940, 2976, 3038, 3136, 3255, 3360, 3430, 3472, 3584, 3720, 3840, 3920, 3968, 4116, 4340, 4480, 4557, 4704, 4960, 5145, 5208, 5376, 5488, 5880, 5952, 6076, 6272, 6510, 6720, 6860, 6944, 7440, 7595, 7680, 7840, 7936, 8232, 8680, 8960, 9114, 9408, 9920, 10290, 10416, 10633, 10752, 10976, 11760, 11904, 12152, 12544, 13020, 13440, 13720, 13888, 14880, 15190, 15680, 15872, 16464, 17360, 17920, 18228, 18816, 19840, 20580, 20832, 21266, 21952, 22785, 23520, 23808, 24304, 25088, 26040, 26880, 27440, 27776, 29760, 30380, 31360, 31899, 32928, 34720, 36456, 37632, 39680, 41160, 41664, 42532, 43904, 45570, 47040, 47616, 48608, 52080, 53165, 53760, 54880, 55552, 59520, 60760, 62720, 63798, 65856, 69440, 72912, 75264, 79360, 82320, 83328, 85064, 87808, 91140, 94080, 97216, 104160, 106330, 109760, 111104, 119040, 121520, 125440, 127596, 131712, 138880, 145824, 159495, 164640, 166656, 170128, 175616, 182280, 188160, 194432, 208320, 212660, 219520, 238080, 243040, 255192, 263424, 277760, 291648, 318990, 329280, 333312, 340256, 364560, 376320, 388864, 416640, 425320, 439040, 486080, 510384, 526848, 555520, 583296, 637980, 658560, 680512, 729120, 777728, 833280, 850640, 878080, 972160, 1020768, 1166592, 1275960, 1317120, 1361024, 1458240, 1666560, 1701280, 1944320, 2041536, 2333184, 2551920, 2634240, 2722048, 2916480, 3402560, 3888640, 4083072, 5103840, 5444096, 5832960, 6805120, 8166144, 10207680, 11665920, 13610240, 16332288, 20415360, 27220480, 40830720, 81661440]

約数ペア:

[(1, 81661440), (2, 40830720), (3, 27220480), (4, 20415360), (5, 16332288), (6, 13610240), (7, 11665920), (8, 10207680), (10, 8166144), (12, 6805120), (14, 5832960), (15, 5444096), (16, 5103840), (20, 4083072), (21, 3888640), (24, 3402560), (28, 2916480), (30, 2722048), (31, 2634240), (32, 2551920), (35, 2333184), (40, 2041536), (42, 1944320), (48, 1701280), (49, 1666560), (56, 1458240), (60, 1361024), (62, 1317120), (64, 1275960), (70, 1166592), (80, 1020768), (84, 972160), (93, 878080), (96, 850640), (98, 833280), (105, 777728), (112, 729120), (120, 680512), (124, 658560), (128, 637980), (140, 583296), (147, 555520), (155, 526848), (160, 510384), (168, 486080), (186, 439040), (192, 425320), (196, 416640), (210, 388864), (217, 376320), (224, 364560), (240, 340256), (245, 333312), (248, 329280), (256, 318990), (280, 291648), (294, 277760), (310, 263424), (320, 255192), (336, 243040), (343, 238080), (372, 219520), (384, 212660), (392, 208320), (420, 194432), (434, 188160), (448, 182280), (465, 175616), (480, 170128), (490, 166656), (496, 164640), (512, 159495), (560, 145824), (588, 138880), (620, 131712), (640, 127596), (651, 125440), (672, 121520), (686, 119040), (735, 111104), (744, 109760), (768, 106330), (784, 104160), (840, 97216), (868, 94080), (896, 91140), (930, 87808), (960, 85064), (980, 83328), (992, 82320), (1029, 79360), (1085, 75264), (1120, 72912), (1176, 69440), (1240, 65856), (1280, 63798), (1302, 62720), (1344, 60760), (1372, 59520), (1470, 55552), (1488, 54880), (1519, 53760), (1536, 53165), (1568, 52080), (1680, 48608), (1715, 47616), (1736, 47040), (1792, 45570), (1860, 43904), (1920, 42532), (1960, 41664), (1984, 41160), (2058, 39680), (2170, 37632), (2240, 36456), (2352, 34720), (2480, 32928), (2560, 31899), (2604, 31360), (2688, 30380), (2744, 29760), (2940, 27776), (2976, 27440), (3038, 26880), (3136, 26040), (3255, 25088), (3360, 24304), (3430, 23808), (3472, 23520), (3584, 22785), (3720, 21952), (3840, 21266), (3920, 20832), (3968, 20580), (4116, 19840), (4340, 18816), (4480, 18228), (4557, 17920), (4704, 17360), (4960, 16464), (5145, 15872), (5208, 15680), (5376, 15190), (5488, 14880), (5880, 13888), (5952, 13720), (6076, 13440), (6272, 13020), (6510, 12544), (6720, 12152), (6860, 11904), (6944, 11760), (7440, 10976), (7595, 10752), (7680, 10633), (7840, 10416), (7936, 10290), (8232, 9920), (8680, 9408), (8960, 9114)]