640640000

素因数分解:

$2^{10}\times 5^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1$

素因数の和:71

約数の個数: 440

約数和(自身を含む): 2148662208

約数和(自身を除く): 1508022208

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 20, 22, 25, 26, 28, 32, 35, 40, 44, 50, 52, 55, 56, 64, 65, 70, 77, 80, 88, 91, 100, 104, 110, 112, 125, 128, 130, 140, 143, 154, 160, 175, 176, 182, 200, 208, 220, 224, 250, 256, 260, 275, 280, 286, 308, 320, 325, 350, 352, 364, 385, 400, 416, 440, 448, 455, 500, 512, 520, 550, 560, 572, 616, 625, 640, 650, 700, 704, 715, 728, 770, 800, 832, 875, 880, 896, 910, 1000, 1001, 1024, 1040, 1100, 1120, 1144, 1232, 1250, 1280, 1300, 1375, 1400, 1408, 1430, 1456, 1540, 1600, 1625, 1664, 1750, 1760, 1792, 1820, 1925, 2000, 2002, 2080, 2200, 2240, 2275, 2288, 2464, 2500, 2560, 2600, 2750, 2800, 2816, 2860, 2912, 3080, 3200, 3250, 3328, 3500, 3520, 3575, 3584, 3640, 3850, 4000, 4004, 4160, 4375, 4400, 4480, 4550, 4576, 4928, 5000, 5005, 5120, 5200, 5500, 5600, 5632, 5720, 5824, 6160, 6400, 6500, 6656, 6875, 7000, 7040, 7150, 7168, 7280, 7700, 8000, 8008, 8125, 8320, 8750, 8800, 8960, 9100, 9152, 9625, 9856, 10000, 10010, 10400, 11000, 11200, 11264, 11375, 11440, 11648, 12320, 12800, 13000, 13312, 13750, 14000, 14080, 14300, 14560, 15400, 16000, 16016, 16250, 16640, 17500, 17600, 17875, 17920, 18200, 18304, 19250, 19712, 20000, 20020, 20800, 22000, 22400, 22750, 22880, 23296, 24640, 25025, 25600, 26000, 27500, 28000, 28160, 28600, 29120, 30800, 32000, 32032, 32500, 33280, 35000, 35200, 35750, 35840, 36400, 36608, 38500, 39424, 40000, 40040, 41600, 44000, 44800, 45500, 45760, 46592, 48125, 49280, 50050, 52000, 55000, 56000, 56320, 56875, 57200, 58240, 61600, 64000, 64064, 65000, 66560, 70000, 70400, 71500, 72800, 73216, 77000, 78848, 80000, 80080, 83200, 88000, 89375, 89600, 91000, 91520, 93184, 96250, 98560, 100100, 104000, 110000, 112000, 113750, 114400, 116480, 123200, 125125, 128000, 128128, 130000, 140000, 140800, 143000, 145600, 146432, 154000, 160000, 160160, 166400, 176000, 178750, 179200, 182000, 183040, 192500, 197120, 200200, 208000, 220000, 224000, 227500, 228800, 232960, 246400, 250250, 256256, 260000, 280000, 281600, 286000, 291200, 308000, 320000, 320320, 332800, 352000, 357500, 364000, 366080, 385000, 394240, 400400, 416000, 440000, 448000, 455000, 457600, 465920, 492800, 500500, 512512, 520000, 560000, 572000, 582400, 616000, 625625, 640000, 640640, 704000, 715000, 728000, 732160, 770000, 800800, 832000, 880000, 896000, 910000, 915200, 985600, 1001000, 1025024, 1040000, 1120000, 1144000, 1164800, 1232000, 1251250, 1281280, 1408000, 1430000, 1456000, 1540000, 1601600, 1664000, 1760000, 1820000, 1830400, 1971200, 2002000, 2080000, 2240000, 2288000, 2329600, 2464000, 2502500, 2562560, 2860000, 2912000, 3080000, 3203200, 3520000, 3640000, 3660800, 4004000, 4160000, 4480000, 4576000, 4928000, 5005000, 5125120, 5720000, 5824000, 6160000, 6406400, 7040000, 7280000, 8008000, 8320000, 9152000, 9856000, 10010000, 11440000, 11648000, 12320000, 12812800, 14560000, 16016000, 18304000, 20020000, 22880000, 24640000, 25625600, 29120000, 32032000, 40040000, 45760000, 49280000, 58240000, 64064000, 80080000, 91520000, 128128000, 160160000, 320320000, 640640000]

約数ペア:

[(1, 640640000), (2, 320320000), (4, 160160000), (5, 128128000), (7, 91520000), (8, 80080000), (10, 64064000), (11, 58240000), (13, 49280000), (14, 45760000), (16, 40040000), (20, 32032000), (22, 29120000), (25, 25625600), (26, 24640000), (28, 22880000), (32, 20020000), (35, 18304000), (40, 16016000), (44, 14560000), (50, 12812800), (52, 12320000), (55, 11648000), (56, 11440000), (64, 10010000), (65, 9856000), (70, 9152000), (77, 8320000), (80, 8008000), (88, 7280000), (91, 7040000), (100, 6406400), (104, 6160000), (110, 5824000), (112, 5720000), (125, 5125120), (128, 5005000), (130, 4928000), (140, 4576000), (143, 4480000), (154, 4160000), (160, 4004000), (175, 3660800), (176, 3640000), (182, 3520000), (200, 3203200), (208, 3080000), (220, 2912000), (224, 2860000), (250, 2562560), (256, 2502500), (260, 2464000), (275, 2329600), (280, 2288000), (286, 2240000), (308, 2080000), (320, 2002000), (325, 1971200), (350, 1830400), (352, 1820000), (364, 1760000), (385, 1664000), (400, 1601600), (416, 1540000), (440, 1456000), (448, 1430000), (455, 1408000), (500, 1281280), (512, 1251250), (520, 1232000), (550, 1164800), (560, 1144000), (572, 1120000), (616, 1040000), (625, 1025024), (640, 1001000), (650, 985600), (700, 915200), (704, 910000), (715, 896000), (728, 880000), (770, 832000), (800, 800800), (832, 770000), (875, 732160), (880, 728000), (896, 715000), (910, 704000), (1000, 640640), (1001, 640000), (1024, 625625), (1040, 616000), (1100, 582400), (1120, 572000), (1144, 560000), (1232, 520000), (1250, 512512), (1280, 500500), (1300, 492800), (1375, 465920), (1400, 457600), (1408, 455000), (1430, 448000), (1456, 440000), (1540, 416000), (1600, 400400), (1625, 394240), (1664, 385000), (1750, 366080), (1760, 364000), (1792, 357500), (1820, 352000), (1925, 332800), (2000, 320320), (2002, 320000), (2080, 308000), (2200, 291200), (2240, 286000), (2275, 281600), (2288, 280000), (2464, 260000), (2500, 256256), (2560, 250250), (2600, 246400), (2750, 232960), (2800, 228800), (2816, 227500), (2860, 224000), (2912, 220000), (3080, 208000), (3200, 200200), (3250, 197120), (3328, 192500), (3500, 183040), (3520, 182000), (3575, 179200), (3584, 178750), (3640, 176000), (3850, 166400), (4000, 160160), (4004, 160000), (4160, 154000), (4375, 146432), (4400, 145600), (4480, 143000), (4550, 140800), (4576, 140000), (4928, 130000), (5000, 128128), (5005, 128000), (5120, 125125), (5200, 123200), (5500, 116480), (5600, 114400), (5632, 113750), (5720, 112000), (5824, 110000), (6160, 104000), (6400, 100100), (6500, 98560), (6656, 96250), (6875, 93184), (7000, 91520), (7040, 91000), (7150, 89600), (7168, 89375), (7280, 88000), (7700, 83200), (8000, 80080), (8008, 80000), (8125, 78848), (8320, 77000), (8750, 73216), (8800, 72800), (8960, 71500), (9100, 70400), (9152, 70000), (9625, 66560), (9856, 65000), (10000, 64064), (10010, 64000), (10400, 61600), (11000, 58240), (11200, 57200), (11264, 56875), (11375, 56320), (11440, 56000), (11648, 55000), (12320, 52000), (12800, 50050), (13000, 49280), (13312, 48125), (13750, 46592), (14000, 45760), (14080, 45500), (14300, 44800), (14560, 44000), (15400, 41600), (16000, 40040), (16016, 40000), (16250, 39424), (16640, 38500), (17500, 36608), (17600, 36400), (17875, 35840), (17920, 35750), (18200, 35200), (18304, 35000), (19250, 33280), (19712, 32500), (20000, 32032), (20020, 32000), (20800, 30800), (22000, 29120), (22400, 28600), (22750, 28160), (22880, 28000), (23296, 27500), (24640, 26000), (25025, 25600)]