640775520

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{5779}}^1$

素因数の和:5818

約数の個数: 288

約数和(自身を含む): 2726680320

約数和(自身を除く): 2085904800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 18, 20, 21, 22, 24, 28, 30, 32, 33, 35, 36, 40, 42, 44, 45, 48, 55, 56, 60, 63, 66, 70, 72, 77, 80, 84, 88, 90, 96, 99, 105, 110, 112, 120, 126, 132, 140, 144, 154, 160, 165, 168, 176, 180, 198, 210, 220, 224, 231, 240, 252, 264, 280, 288, 308, 315, 330, 336, 352, 360, 385, 396, 420, 440, 462, 480, 495, 504, 528, 560, 616, 630, 660, 672, 693, 720, 770, 792, 840, 880, 924, 990, 1008, 1056, 1120, 1155, 1232, 1260, 1320, 1386, 1440, 1540, 1584, 1680, 1760, 1848, 1980, 2016, 2310, 2464, 2520, 2640, 2772, 3080, 3168, 3360, 3465, 3696, 3960, 4620, 5040, 5280, 5544, 5779, 6160, 6930, 7392, 7920, 9240, 10080, 11088, 11558, 12320, 13860, 15840, 17337, 18480, 22176, 23116, 27720, 28895, 34674, 36960, 40453, 46232, 52011, 55440, 57790, 63569, 69348, 80906, 86685, 92464, 104022, 110880, 115580, 121359, 127138, 138696, 161812, 173370, 184928, 190707, 202265, 208044, 231160, 242718, 254276, 260055, 277392, 317845, 323624, 346740, 364077, 381414, 404530, 416088, 444983, 462320, 485436, 508552, 520110, 554784, 572121, 606795, 635690, 647248, 693480, 728154, 762828, 809060, 832176, 889966, 924640, 953535, 970872, 1017104, 1040220, 1144242, 1213590, 1271380, 1294496, 1334949, 1386960, 1456308, 1525656, 1618120, 1664352, 1779932, 1820385, 1907070, 1941744, 2034208, 2080440, 2224915, 2288484, 2427180, 2542760, 2669898, 2773920, 2860605, 2912616, 3051312, 3236240, 3559864, 3640770, 3814140, 3883488, 4004847, 4160880, 4449830, 4576968, 4854360, 5085520, 5339796, 5721210, 5825232, 6102624, 6472480, 6674745, 7119728, 7281540, 7628280, 8009694, 8321760, 8899660, 9153936, 9708720, 10171040, 10679592, 11442420, 11650464, 13349490, 14239456, 14563080, 15256560, 16019388, 17799320, 18307872, 19417440, 20024235, 21359184, 22884840, 26698980, 29126160, 30513120, 32038776, 35598640, 40048470, 42718368, 45769680, 53397960, 58252320, 64077552, 71197280, 80096940, 91539360, 106795920, 128155104, 160193880, 213591840, 320387760, 640775520]

約数ペア:

[(1, 640775520), (2, 320387760), (3, 213591840), (4, 160193880), (5, 128155104), (6, 106795920), (7, 91539360), (8, 80096940), (9, 71197280), (10, 64077552), (11, 58252320), (12, 53397960), (14, 45769680), (15, 42718368), (16, 40048470), (18, 35598640), (20, 32038776), (21, 30513120), (22, 29126160), (24, 26698980), (28, 22884840), (30, 21359184), (32, 20024235), (33, 19417440), (35, 18307872), (36, 17799320), (40, 16019388), (42, 15256560), (44, 14563080), (45, 14239456), (48, 13349490), (55, 11650464), (56, 11442420), (60, 10679592), (63, 10171040), (66, 9708720), (70, 9153936), (72, 8899660), (77, 8321760), (80, 8009694), (84, 7628280), (88, 7281540), (90, 7119728), (96, 6674745), (99, 6472480), (105, 6102624), (110, 5825232), (112, 5721210), (120, 5339796), (126, 5085520), (132, 4854360), (140, 4576968), (144, 4449830), (154, 4160880), (160, 4004847), (165, 3883488), (168, 3814140), (176, 3640770), (180, 3559864), (198, 3236240), (210, 3051312), (220, 2912616), (224, 2860605), (231, 2773920), (240, 2669898), (252, 2542760), (264, 2427180), (280, 2288484), (288, 2224915), (308, 2080440), (315, 2034208), (330, 1941744), (336, 1907070), (352, 1820385), (360, 1779932), (385, 1664352), (396, 1618120), (420, 1525656), (440, 1456308), (462, 1386960), (480, 1334949), (495, 1294496), (504, 1271380), (528, 1213590), (560, 1144242), (616, 1040220), (630, 1017104), (660, 970872), (672, 953535), (693, 924640), (720, 889966), (770, 832176), (792, 809060), (840, 762828), (880, 728154), (924, 693480), (990, 647248), (1008, 635690), (1056, 606795), (1120, 572121), (1155, 554784), (1232, 520110), (1260, 508552), (1320, 485436), (1386, 462320), (1440, 444983), (1540, 416088), (1584, 404530), (1680, 381414), (1760, 364077), (1848, 346740), (1980, 323624), (2016, 317845), (2310, 277392), (2464, 260055), (2520, 254276), (2640, 242718), (2772, 231160), (3080, 208044), (3168, 202265), (3360, 190707), (3465, 184928), (3696, 173370), (3960, 161812), (4620, 138696), (5040, 127138), (5280, 121359), (5544, 115580), (5779, 110880), (6160, 104022), (6930, 92464), (7392, 86685), (7920, 80906), (9240, 69348), (10080, 63569), (11088, 57790), (11558, 55440), (12320, 52011), (13860, 46232), (15840, 40453), (17337, 36960), (18480, 34674), (22176, 28895), (23116, 27720)]