256546080

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{821}}^1$

素因数の和:880

約数の個数: 288

約数和(自身を含む): 1034062848

約数和(自身を除く): 777516768

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 31, 32, 35, 36, 40, 42, 45, 48, 56, 60, 62, 63, 70, 72, 80, 84, 90, 93, 96, 105, 112, 120, 124, 126, 140, 144, 155, 160, 168, 180, 186, 210, 217, 224, 240, 248, 252, 279, 280, 288, 310, 315, 336, 360, 372, 420, 434, 465, 480, 496, 504, 558, 560, 620, 630, 651, 672, 720, 744, 821, 840, 868, 930, 992, 1008, 1085, 1116, 1120, 1240, 1260, 1302, 1395, 1440, 1488, 1642, 1680, 1736, 1860, 1953, 2016, 2170, 2232, 2463, 2480, 2520, 2604, 2790, 2976, 3255, 3284, 3360, 3472, 3720, 3906, 4105, 4340, 4464, 4926, 4960, 5040, 5208, 5580, 5747, 6510, 6568, 6944, 7389, 7440, 7812, 8210, 8680, 8928, 9765, 9852, 10080, 10416, 11160, 11494, 12315, 13020, 13136, 14778, 14880, 15624, 16420, 17241, 17360, 19530, 19704, 20832, 22320, 22988, 24630, 25451, 26040, 26272, 28735, 29556, 31248, 32840, 34482, 34720, 36945, 39060, 39408, 44640, 45976, 49260, 50902, 51723, 52080, 57470, 59112, 62496, 65680, 68964, 73890, 76353, 78120, 78816, 86205, 91952, 98520, 101804, 103446, 104160, 114940, 118224, 127255, 131360, 137928, 147780, 152706, 156240, 172410, 178157, 183904, 197040, 203608, 206892, 229059, 229880, 236448, 254510, 258615, 275856, 295560, 305412, 312480, 344820, 356314, 381765, 394080, 407216, 413784, 458118, 459760, 509020, 517230, 534471, 551712, 591120, 610824, 689640, 712628, 763530, 814432, 827568, 890785, 916236, 919520, 1018040, 1034460, 1068942, 1145295, 1182240, 1221648, 1379280, 1425256, 1527060, 1603413, 1655136, 1781570, 1832472, 2036080, 2068920, 2137884, 2290590, 2443296, 2672355, 2758560, 2850512, 3054120, 3206826, 3563140, 3664944, 4072160, 4137840, 4275768, 4581180, 5344710, 5701024, 6108240, 6413652, 7126280, 7329888, 8017065, 8275680, 8551536, 9162360, 10689420, 12216480, 12827304, 14252560, 16034130, 17103072, 18324720, 21378840, 25654608, 28505120, 32068260, 36649440, 42757680, 51309216, 64136520, 85515360, 128273040, 256546080]

約数ペア:

[(1, 256546080), (2, 128273040), (3, 85515360), (4, 64136520), (5, 51309216), (6, 42757680), (7, 36649440), (8, 32068260), (9, 28505120), (10, 25654608), (12, 21378840), (14, 18324720), (15, 17103072), (16, 16034130), (18, 14252560), (20, 12827304), (21, 12216480), (24, 10689420), (28, 9162360), (30, 8551536), (31, 8275680), (32, 8017065), (35, 7329888), (36, 7126280), (40, 6413652), (42, 6108240), (45, 5701024), (48, 5344710), (56, 4581180), (60, 4275768), (62, 4137840), (63, 4072160), (70, 3664944), (72, 3563140), (80, 3206826), (84, 3054120), (90, 2850512), (93, 2758560), (96, 2672355), (105, 2443296), (112, 2290590), (120, 2137884), (124, 2068920), (126, 2036080), (140, 1832472), (144, 1781570), (155, 1655136), (160, 1603413), (168, 1527060), (180, 1425256), (186, 1379280), (210, 1221648), (217, 1182240), (224, 1145295), (240, 1068942), (248, 1034460), (252, 1018040), (279, 919520), (280, 916236), (288, 890785), (310, 827568), (315, 814432), (336, 763530), (360, 712628), (372, 689640), (420, 610824), (434, 591120), (465, 551712), (480, 534471), (496, 517230), (504, 509020), (558, 459760), (560, 458118), (620, 413784), (630, 407216), (651, 394080), (672, 381765), (720, 356314), (744, 344820), (821, 312480), (840, 305412), (868, 295560), (930, 275856), (992, 258615), (1008, 254510), (1085, 236448), (1116, 229880), (1120, 229059), (1240, 206892), (1260, 203608), (1302, 197040), (1395, 183904), (1440, 178157), (1488, 172410), (1642, 156240), (1680, 152706), (1736, 147780), (1860, 137928), (1953, 131360), (2016, 127255), (2170, 118224), (2232, 114940), (2463, 104160), (2480, 103446), (2520, 101804), (2604, 98520), (2790, 91952), (2976, 86205), (3255, 78816), (3284, 78120), (3360, 76353), (3472, 73890), (3720, 68964), (3906, 65680), (4105, 62496), (4340, 59112), (4464, 57470), (4926, 52080), (4960, 51723), (5040, 50902), (5208, 49260), (5580, 45976), (5747, 44640), (6510, 39408), (6568, 39060), (6944, 36945), (7389, 34720), (7440, 34482), (7812, 32840), (8210, 31248), (8680, 29556), (8928, 28735), (9765, 26272), (9852, 26040), (10080, 25451), (10416, 24630), (11160, 22988), (11494, 22320), (12315, 20832), (13020, 19704), (13136, 19530), (14778, 17360), (14880, 17241), (15624, 16420)]