256112640

素因数分解:

$2^{11}\times 3^2\times 5^1\times 7^1\times {\mathrm{397}}^1$

素因数の和:437

約数の個数: 288

約数和(自身を含む): 1017001440

約数和(自身を除く): 760888800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 128, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 256, 280, 288, 315, 320, 336, 360, 384, 397, 420, 448, 480, 504, 512, 560, 576, 630, 640, 672, 720, 768, 794, 840, 896, 960, 1008, 1024, 1120, 1152, 1191, 1260, 1280, 1344, 1440, 1536, 1588, 1680, 1792, 1920, 1985, 2016, 2048, 2240, 2304, 2382, 2520, 2560, 2688, 2779, 2880, 3072, 3176, 3360, 3573, 3584, 3840, 3970, 4032, 4480, 4608, 4764, 5040, 5120, 5376, 5558, 5760, 5955, 6144, 6352, 6720, 7146, 7168, 7680, 7940, 8064, 8337, 8960, 9216, 9528, 10080, 10240, 10752, 11116, 11520, 11910, 12704, 13440, 13895, 14292, 14336, 15360, 15880, 16128, 16674, 17865, 17920, 18432, 19056, 20160, 21504, 22232, 23040, 23820, 25011, 25408, 26880, 27790, 28584, 30720, 31760, 32256, 33348, 35730, 35840, 38112, 40320, 41685, 43008, 44464, 46080, 47640, 50022, 50816, 53760, 55580, 57168, 63520, 64512, 66696, 71460, 71680, 76224, 80640, 83370, 88928, 92160, 95280, 100044, 101632, 107520, 111160, 114336, 125055, 127040, 129024, 133392, 142920, 152448, 161280, 166740, 177856, 190560, 200088, 203264, 215040, 222320, 228672, 250110, 254080, 266784, 285840, 304896, 322560, 333480, 355712, 381120, 400176, 406528, 444640, 457344, 500220, 508160, 533568, 571680, 609792, 645120, 666960, 711424, 762240, 800352, 813056, 889280, 914688, 1000440, 1016320, 1067136, 1143360, 1219584, 1333920, 1422848, 1524480, 1600704, 1778560, 1829376, 2000880, 2032640, 2134272, 2286720, 2439168, 2667840, 2845696, 3048960, 3201408, 3557120, 3658752, 4001760, 4065280, 4268544, 4573440, 5335680, 5691392, 6097920, 6402816, 7114240, 7317504, 8003520, 8537088, 9146880, 10671360, 12195840, 12805632, 14228480, 16007040, 17074176, 18293760, 21342720, 25611264, 28456960, 32014080, 36587520, 42685440, 51222528, 64028160, 85370880, 128056320, 256112640]

約数ペア:

[(1, 256112640), (2, 128056320), (3, 85370880), (4, 64028160), (5, 51222528), (6, 42685440), (7, 36587520), (8, 32014080), (9, 28456960), (10, 25611264), (12, 21342720), (14, 18293760), (15, 17074176), (16, 16007040), (18, 14228480), (20, 12805632), (21, 12195840), (24, 10671360), (28, 9146880), (30, 8537088), (32, 8003520), (35, 7317504), (36, 7114240), (40, 6402816), (42, 6097920), (45, 5691392), (48, 5335680), (56, 4573440), (60, 4268544), (63, 4065280), (64, 4001760), (70, 3658752), (72, 3557120), (80, 3201408), (84, 3048960), (90, 2845696), (96, 2667840), (105, 2439168), (112, 2286720), (120, 2134272), (126, 2032640), (128, 2000880), (140, 1829376), (144, 1778560), (160, 1600704), (168, 1524480), (180, 1422848), (192, 1333920), (210, 1219584), (224, 1143360), (240, 1067136), (252, 1016320), (256, 1000440), (280, 914688), (288, 889280), (315, 813056), (320, 800352), (336, 762240), (360, 711424), (384, 666960), (397, 645120), (420, 609792), (448, 571680), (480, 533568), (504, 508160), (512, 500220), (560, 457344), (576, 444640), (630, 406528), (640, 400176), (672, 381120), (720, 355712), (768, 333480), (794, 322560), (840, 304896), (896, 285840), (960, 266784), (1008, 254080), (1024, 250110), (1120, 228672), (1152, 222320), (1191, 215040), (1260, 203264), (1280, 200088), (1344, 190560), (1440, 177856), (1536, 166740), (1588, 161280), (1680, 152448), (1792, 142920), (1920, 133392), (1985, 129024), (2016, 127040), (2048, 125055), (2240, 114336), (2304, 111160), (2382, 107520), (2520, 101632), (2560, 100044), (2688, 95280), (2779, 92160), (2880, 88928), (3072, 83370), (3176, 80640), (3360, 76224), (3573, 71680), (3584, 71460), (3840, 66696), (3970, 64512), (4032, 63520), (4480, 57168), (4608, 55580), (4764, 53760), (5040, 50816), (5120, 50022), (5376, 47640), (5558, 46080), (5760, 44464), (5955, 43008), (6144, 41685), (6352, 40320), (6720, 38112), (7146, 35840), (7168, 35730), (7680, 33348), (7940, 32256), (8064, 31760), (8337, 30720), (8960, 28584), (9216, 27790), (9528, 26880), (10080, 25408), (10240, 25011), (10752, 23820), (11116, 23040), (11520, 22232), (11910, 21504), (12704, 20160), (13440, 19056), (13895, 18432), (14292, 17920), (14336, 17865), (15360, 16674), (15880, 16128)]