261947520

素因数分解:

$2^7\times 3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:225

約数の個数: 320

約数和(自身を含む): 971562240

約数和(自身を除く): 709614720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 31, 32, 36, 40, 45, 48, 54, 60, 62, 64, 72, 80, 81, 90, 93, 96, 108, 120, 124, 128, 135, 144, 155, 160, 162, 163, 180, 186, 192, 216, 240, 248, 270, 279, 288, 310, 320, 324, 326, 360, 372, 384, 405, 432, 465, 480, 489, 496, 540, 558, 576, 620, 640, 648, 652, 720, 744, 810, 815, 837, 864, 930, 960, 978, 992, 1080, 1116, 1152, 1240, 1296, 1304, 1395, 1440, 1467, 1488, 1620, 1630, 1674, 1728, 1860, 1920, 1956, 1984, 2160, 2232, 2445, 2480, 2511, 2592, 2608, 2790, 2880, 2934, 2976, 3240, 3260, 3348, 3456, 3720, 3912, 3968, 4185, 4320, 4401, 4464, 4890, 4960, 5022, 5053, 5184, 5216, 5580, 5760, 5868, 5952, 6480, 6520, 6696, 7335, 7440, 7824, 8370, 8640, 8802, 8928, 9780, 9920, 10044, 10106, 10368, 10432, 11160, 11736, 11904, 12555, 12960, 13040, 13203, 13392, 14670, 14880, 15159, 15648, 16740, 17280, 17604, 17856, 19560, 19840, 20088, 20212, 20864, 22005, 22320, 23472, 25110, 25265, 25920, 26080, 26406, 26784, 29340, 29760, 30318, 31296, 33480, 35208, 35712, 39120, 40176, 40424, 44010, 44640, 45477, 46944, 50220, 50530, 51840, 52160, 52812, 53568, 58680, 59520, 60636, 62592, 66015, 66960, 70416, 75795, 78240, 80352, 80848, 88020, 89280, 90954, 93888, 100440, 101060, 104320, 105624, 107136, 117360, 121272, 132030, 133920, 136431, 140832, 151590, 156480, 160704, 161696, 176040, 178560, 181908, 187776, 200880, 202120, 211248, 227385, 234720, 242544, 264060, 267840, 272862, 281664, 303180, 312960, 321408, 323392, 352080, 363816, 401760, 404240, 409293, 422496, 454770, 469440, 485088, 528120, 535680, 545724, 563328, 606360, 646784, 682155, 704160, 727632, 803520, 808480, 818586, 844992, 909540, 938880, 970176, 1056240, 1091448, 1212720, 1364310, 1408320, 1455264, 1607040, 1616960, 1637172, 1689984, 1819080, 1940352, 2046465, 2112480, 2182896, 2425440, 2728620, 2816640, 2910528, 3233920, 3274344, 3638160, 4092930, 4224960, 4365792, 4850880, 5457240, 5821056, 6548688, 7276320, 8185860, 8449920, 8731584, 9701760, 10914480, 13097376, 14552640, 16371720, 17463168, 21828960, 26194752, 29105280, 32743440, 43657920, 52389504, 65486880, 87315840, 130973760, 261947520]

約数ペア:

[(1, 261947520), (2, 130973760), (3, 87315840), (4, 65486880), (5, 52389504), (6, 43657920), (8, 32743440), (9, 29105280), (10, 26194752), (12, 21828960), (15, 17463168), (16, 16371720), (18, 14552640), (20, 13097376), (24, 10914480), (27, 9701760), (30, 8731584), (31, 8449920), (32, 8185860), (36, 7276320), (40, 6548688), (45, 5821056), (48, 5457240), (54, 4850880), (60, 4365792), (62, 4224960), (64, 4092930), (72, 3638160), (80, 3274344), (81, 3233920), (90, 2910528), (93, 2816640), (96, 2728620), (108, 2425440), (120, 2182896), (124, 2112480), (128, 2046465), (135, 1940352), (144, 1819080), (155, 1689984), (160, 1637172), (162, 1616960), (163, 1607040), (180, 1455264), (186, 1408320), (192, 1364310), (216, 1212720), (240, 1091448), (248, 1056240), (270, 970176), (279, 938880), (288, 909540), (310, 844992), (320, 818586), (324, 808480), (326, 803520), (360, 727632), (372, 704160), (384, 682155), (405, 646784), (432, 606360), (465, 563328), (480, 545724), (489, 535680), (496, 528120), (540, 485088), (558, 469440), (576, 454770), (620, 422496), (640, 409293), (648, 404240), (652, 401760), (720, 363816), (744, 352080), (810, 323392), (815, 321408), (837, 312960), (864, 303180), (930, 281664), (960, 272862), (978, 267840), (992, 264060), (1080, 242544), (1116, 234720), (1152, 227385), (1240, 211248), (1296, 202120), (1304, 200880), (1395, 187776), (1440, 181908), (1467, 178560), (1488, 176040), (1620, 161696), (1630, 160704), (1674, 156480), (1728, 151590), (1860, 140832), (1920, 136431), (1956, 133920), (1984, 132030), (2160, 121272), (2232, 117360), (2445, 107136), (2480, 105624), (2511, 104320), (2592, 101060), (2608, 100440), (2790, 93888), (2880, 90954), (2934, 89280), (2976, 88020), (3240, 80848), (3260, 80352), (3348, 78240), (3456, 75795), (3720, 70416), (3912, 66960), (3968, 66015), (4185, 62592), (4320, 60636), (4401, 59520), (4464, 58680), (4890, 53568), (4960, 52812), (5022, 52160), (5053, 51840), (5184, 50530), (5216, 50220), (5580, 46944), (5760, 45477), (5868, 44640), (5952, 44010), (6480, 40424), (6520, 40176), (6696, 39120), (7335, 35712), (7440, 35208), (7824, 33480), (8370, 31296), (8640, 30318), (8802, 29760), (8928, 29340), (9780, 26784), (9920, 26406), (10044, 26080), (10106, 25920), (10368, 25265), (10432, 25110), (11160, 23472), (11736, 22320), (11904, 22005), (12555, 20864), (12960, 20212), (13040, 20088), (13203, 19840), (13392, 19560), (14670, 17856), (14880, 17604), (15159, 17280), (15648, 16740)]