257345280

素因数分解:

$2^8\times 3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{251}}^1$

素因数の和:367

約数の個数: 216

約数和(自身を含む): 903979440

約数和(自身を除く): 646634160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 89, 90, 96, 120, 128, 144, 160, 178, 180, 192, 240, 251, 256, 267, 288, 320, 356, 360, 384, 445, 480, 502, 534, 576, 640, 712, 720, 753, 768, 801, 890, 960, 1004, 1068, 1152, 1255, 1280, 1335, 1424, 1440, 1506, 1602, 1780, 1920, 2008, 2136, 2259, 2304, 2510, 2670, 2848, 2880, 3012, 3204, 3560, 3765, 3840, 4005, 4016, 4272, 4518, 5020, 5340, 5696, 5760, 6024, 6408, 7120, 7530, 8010, 8032, 8544, 9036, 10040, 10680, 11295, 11392, 11520, 12048, 12816, 14240, 15060, 16020, 16064, 17088, 18072, 20080, 21360, 22339, 22590, 22784, 24096, 25632, 28480, 30120, 32040, 32128, 34176, 36144, 40160, 42720, 44678, 45180, 48192, 51264, 56960, 60240, 64080, 64256, 67017, 68352, 72288, 80320, 85440, 89356, 90360, 96384, 102528, 111695, 113920, 120480, 128160, 134034, 144576, 160640, 170880, 178712, 180720, 192768, 201051, 205056, 223390, 240960, 256320, 268068, 289152, 321280, 335085, 341760, 357424, 361440, 402102, 446780, 481920, 512640, 536136, 578304, 670170, 714848, 722880, 804204, 893560, 963840, 1005255, 1025280, 1072272, 1340340, 1429696, 1445760, 1608408, 1787120, 2010510, 2144544, 2680680, 2859392, 2891520, 3216816, 3574240, 4021020, 4289088, 5361360, 5718784, 6433632, 7148480, 8042040, 8578176, 10722720, 12867264, 14296960, 16084080, 17156352, 21445440, 25734528, 28593920, 32168160, 42890880, 51469056, 64336320, 85781760, 128672640, 257345280]

約数ペア:

[(1, 257345280), (2, 128672640), (3, 85781760), (4, 64336320), (5, 51469056), (6, 42890880), (8, 32168160), (9, 28593920), (10, 25734528), (12, 21445440), (15, 17156352), (16, 16084080), (18, 14296960), (20, 12867264), (24, 10722720), (30, 8578176), (32, 8042040), (36, 7148480), (40, 6433632), (45, 5718784), (48, 5361360), (60, 4289088), (64, 4021020), (72, 3574240), (80, 3216816), (89, 2891520), (90, 2859392), (96, 2680680), (120, 2144544), (128, 2010510), (144, 1787120), (160, 1608408), (178, 1445760), (180, 1429696), (192, 1340340), (240, 1072272), (251, 1025280), (256, 1005255), (267, 963840), (288, 893560), (320, 804204), (356, 722880), (360, 714848), (384, 670170), (445, 578304), (480, 536136), (502, 512640), (534, 481920), (576, 446780), (640, 402102), (712, 361440), (720, 357424), (753, 341760), (768, 335085), (801, 321280), (890, 289152), (960, 268068), (1004, 256320), (1068, 240960), (1152, 223390), (1255, 205056), (1280, 201051), (1335, 192768), (1424, 180720), (1440, 178712), (1506, 170880), (1602, 160640), (1780, 144576), (1920, 134034), (2008, 128160), (2136, 120480), (2259, 113920), (2304, 111695), (2510, 102528), (2670, 96384), (2848, 90360), (2880, 89356), (3012, 85440), (3204, 80320), (3560, 72288), (3765, 68352), (3840, 67017), (4005, 64256), (4016, 64080), (4272, 60240), (4518, 56960), (5020, 51264), (5340, 48192), (5696, 45180), (5760, 44678), (6024, 42720), (6408, 40160), (7120, 36144), (7530, 34176), (8010, 32128), (8032, 32040), (8544, 30120), (9036, 28480), (10040, 25632), (10680, 24096), (11295, 22784), (11392, 22590), (11520, 22339), (12048, 21360), (12816, 20080), (14240, 18072), (15060, 17088), (16020, 16064)]