1978816000

素因数分解:

$2^9\times 5^3\times 7^2\times {\mathrm{631}}^1$

素因数の和:678

約数の個数: 240

約数和(自身を含む): 5748998112

約数和(自身を除く): 3770182112

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 49, 50, 56, 64, 70, 80, 98, 100, 112, 125, 128, 140, 160, 175, 196, 200, 224, 245, 250, 256, 280, 320, 350, 392, 400, 448, 490, 500, 512, 560, 631, 640, 700, 784, 800, 875, 896, 980, 1000, 1120, 1225, 1262, 1280, 1400, 1568, 1600, 1750, 1792, 1960, 2000, 2240, 2450, 2524, 2560, 2800, 3136, 3155, 3200, 3500, 3584, 3920, 4000, 4417, 4480, 4900, 5048, 5600, 6125, 6272, 6310, 6400, 7000, 7840, 8000, 8834, 8960, 9800, 10096, 11200, 12250, 12544, 12620, 12800, 14000, 15680, 15775, 16000, 17668, 17920, 19600, 20192, 22085, 22400, 24500, 25088, 25240, 28000, 30919, 31360, 31550, 32000, 35336, 39200, 40384, 44170, 44800, 49000, 50480, 56000, 61838, 62720, 63100, 64000, 70672, 78400, 78875, 80768, 88340, 89600, 98000, 100960, 110425, 112000, 123676, 125440, 126200, 141344, 154595, 156800, 157750, 161536, 176680, 196000, 201920, 220850, 224000, 247352, 252400, 282688, 309190, 313600, 315500, 323072, 353360, 392000, 403840, 441700, 448000, 494704, 504800, 552125, 565376, 618380, 627200, 631000, 706720, 772975, 784000, 807680, 883400, 989408, 1009600, 1104250, 1130752, 1236760, 1262000, 1413440, 1545950, 1568000, 1615360, 1766800, 1978816, 2019200, 2208500, 2261504, 2473520, 2524000, 2826880, 3091900, 3136000, 3533600, 3864875, 3957632, 4038400, 4417000, 4947040, 5048000, 5653760, 6183800, 7067200, 7729750, 7915264, 8076800, 8834000, 9894080, 10096000, 11307520, 12367600, 14134400, 15459500, 15830528, 17668000, 19788160, 20192000, 24735200, 28268800, 30919000, 35336000, 39576320, 40384000, 49470400, 56537600, 61838000, 70672000, 79152640, 98940800, 123676000, 141344000, 197881600, 247352000, 282688000, 395763200, 494704000, 989408000, 1978816000]

約数ペア:

[(1, 1978816000), (2, 989408000), (4, 494704000), (5, 395763200), (7, 282688000), (8, 247352000), (10, 197881600), (14, 141344000), (16, 123676000), (20, 98940800), (25, 79152640), (28, 70672000), (32, 61838000), (35, 56537600), (40, 49470400), (49, 40384000), (50, 39576320), (56, 35336000), (64, 30919000), (70, 28268800), (80, 24735200), (98, 20192000), (100, 19788160), (112, 17668000), (125, 15830528), (128, 15459500), (140, 14134400), (160, 12367600), (175, 11307520), (196, 10096000), (200, 9894080), (224, 8834000), (245, 8076800), (250, 7915264), (256, 7729750), (280, 7067200), (320, 6183800), (350, 5653760), (392, 5048000), (400, 4947040), (448, 4417000), (490, 4038400), (500, 3957632), (512, 3864875), (560, 3533600), (631, 3136000), (640, 3091900), (700, 2826880), (784, 2524000), (800, 2473520), (875, 2261504), (896, 2208500), (980, 2019200), (1000, 1978816), (1120, 1766800), (1225, 1615360), (1262, 1568000), (1280, 1545950), (1400, 1413440), (1568, 1262000), (1600, 1236760), (1750, 1130752), (1792, 1104250), (1960, 1009600), (2000, 989408), (2240, 883400), (2450, 807680), (2524, 784000), (2560, 772975), (2800, 706720), (3136, 631000), (3155, 627200), (3200, 618380), (3500, 565376), (3584, 552125), (3920, 504800), (4000, 494704), (4417, 448000), (4480, 441700), (4900, 403840), (5048, 392000), (5600, 353360), (6125, 323072), (6272, 315500), (6310, 313600), (6400, 309190), (7000, 282688), (7840, 252400), (8000, 247352), (8834, 224000), (8960, 220850), (9800, 201920), (10096, 196000), (11200, 176680), (12250, 161536), (12544, 157750), (12620, 156800), (12800, 154595), (14000, 141344), (15680, 126200), (15775, 125440), (16000, 123676), (17668, 112000), (17920, 110425), (19600, 100960), (20192, 98000), (22085, 89600), (22400, 88340), (24500, 80768), (25088, 78875), (25240, 78400), (28000, 70672), (30919, 64000), (31360, 63100), (31550, 62720), (32000, 61838), (35336, 56000), (39200, 50480), (40384, 49000), (44170, 44800)]