640448640

素因数分解:

$2^7\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2851}}^1$

素因数の和:2892

約数の個数: 256

約数和(自身を含む): 2443593600

約数和(自身を除く): 1803144960

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 27, 30, 32, 36, 39, 40, 45, 48, 52, 54, 60, 64, 65, 72, 78, 80, 90, 96, 104, 108, 117, 120, 128, 130, 135, 144, 156, 160, 180, 192, 195, 208, 216, 234, 240, 260, 270, 288, 312, 320, 351, 360, 384, 390, 416, 432, 468, 480, 520, 540, 576, 585, 624, 640, 702, 720, 780, 832, 864, 936, 960, 1040, 1080, 1152, 1170, 1248, 1404, 1440, 1560, 1664, 1728, 1755, 1872, 1920, 2080, 2160, 2340, 2496, 2808, 2851, 2880, 3120, 3456, 3510, 3744, 4160, 4320, 4680, 4992, 5616, 5702, 5760, 6240, 7020, 7488, 8320, 8553, 8640, 9360, 11232, 11404, 12480, 14040, 14255, 14976, 17106, 17280, 18720, 22464, 22808, 24960, 25659, 28080, 28510, 34212, 37063, 37440, 42765, 44928, 45616, 51318, 56160, 57020, 68424, 74126, 74880, 76977, 85530, 91232, 102636, 111189, 112320, 114040, 128295, 136848, 148252, 153954, 171060, 182464, 185315, 205272, 222378, 224640, 228080, 256590, 273696, 296504, 307908, 333567, 342120, 364928, 370630, 384885, 410544, 444756, 456160, 513180, 547392, 555945, 593008, 615816, 667134, 684240, 741260, 769770, 821088, 889512, 912320, 1000701, 1026360, 1094784, 1111890, 1186016, 1231632, 1334268, 1368480, 1482520, 1539540, 1642176, 1667835, 1779024, 1824640, 2001402, 2052720, 2223780, 2372032, 2463264, 2668536, 2736960, 2965040, 3079080, 3284352, 3335670, 3558048, 4002804, 4105440, 4447560, 4744064, 4926528, 5003505, 5337072, 5473920, 5930080, 6158160, 6671340, 7116096, 8005608, 8210880, 8895120, 9853056, 10007010, 10674144, 11860160, 12316320, 13342680, 14232192, 16011216, 16421760, 17790240, 20014020, 21348288, 23720320, 24632640, 26685360, 32022432, 35580480, 40028040, 42696576, 49265280, 53370720, 64044864, 71160960, 80056080, 106741440, 128089728, 160112160, 213482880, 320224320, 640448640]

約数ペア:

[(1, 640448640), (2, 320224320), (3, 213482880), (4, 160112160), (5, 128089728), (6, 106741440), (8, 80056080), (9, 71160960), (10, 64044864), (12, 53370720), (13, 49265280), (15, 42696576), (16, 40028040), (18, 35580480), (20, 32022432), (24, 26685360), (26, 24632640), (27, 23720320), (30, 21348288), (32, 20014020), (36, 17790240), (39, 16421760), (40, 16011216), (45, 14232192), (48, 13342680), (52, 12316320), (54, 11860160), (60, 10674144), (64, 10007010), (65, 9853056), (72, 8895120), (78, 8210880), (80, 8005608), (90, 7116096), (96, 6671340), (104, 6158160), (108, 5930080), (117, 5473920), (120, 5337072), (128, 5003505), (130, 4926528), (135, 4744064), (144, 4447560), (156, 4105440), (160, 4002804), (180, 3558048), (192, 3335670), (195, 3284352), (208, 3079080), (216, 2965040), (234, 2736960), (240, 2668536), (260, 2463264), (270, 2372032), (288, 2223780), (312, 2052720), (320, 2001402), (351, 1824640), (360, 1779024), (384, 1667835), (390, 1642176), (416, 1539540), (432, 1482520), (468, 1368480), (480, 1334268), (520, 1231632), (540, 1186016), (576, 1111890), (585, 1094784), (624, 1026360), (640, 1000701), (702, 912320), (720, 889512), (780, 821088), (832, 769770), (864, 741260), (936, 684240), (960, 667134), (1040, 615816), (1080, 593008), (1152, 555945), (1170, 547392), (1248, 513180), (1404, 456160), (1440, 444756), (1560, 410544), (1664, 384885), (1728, 370630), (1755, 364928), (1872, 342120), (1920, 333567), (2080, 307908), (2160, 296504), (2340, 273696), (2496, 256590), (2808, 228080), (2851, 224640), (2880, 222378), (3120, 205272), (3456, 185315), (3510, 182464), (3744, 171060), (4160, 153954), (4320, 148252), (4680, 136848), (4992, 128295), (5616, 114040), (5702, 112320), (5760, 111189), (6240, 102636), (7020, 91232), (7488, 85530), (8320, 76977), (8553, 74880), (8640, 74126), (9360, 68424), (11232, 57020), (11404, 56160), (12480, 51318), (14040, 45616), (14255, 44928), (14976, 42765), (17106, 37440), (17280, 37063), (18720, 34212), (22464, 28510), (22808, 28080), (24960, 25659)]