257857920

素因数分解:

$2^7\times 3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{503}}^1$

素因数の和:617

約数の個数: 192

約数和(自身を含む): 902210400

約数和(自身を除く): 644352480

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, 267, 288, 320, 356, 360, 384, 445, 480, 503, 534, 576, 640, 712, 720, 801, 890, 960, 1006, 1068, 1152, 1335, 1424, 1440, 1509, 1602, 1780, 1920, 2012, 2136, 2515, 2670, 2848, 2880, 3018, 3204, 3560, 4005, 4024, 4272, 4527, 5030, 5340, 5696, 5760, 6036, 6408, 7120, 7545, 8010, 8048, 8544, 9054, 10060, 10680, 11392, 12072, 12816, 14240, 15090, 16020, 16096, 17088, 18108, 20120, 21360, 22635, 24144, 25632, 28480, 30180, 32040, 32192, 34176, 36216, 40240, 42720, 44767, 45270, 48288, 51264, 56960, 60360, 64080, 64384, 72432, 80480, 85440, 89534, 90540, 96576, 102528, 120720, 128160, 134301, 144864, 160960, 170880, 179068, 181080, 193152, 223835, 241440, 256320, 268602, 289728, 321920, 358136, 362160, 402903, 447670, 482880, 512640, 537204, 579456, 671505, 716272, 724320, 805806, 895340, 965760, 1074408, 1343010, 1432544, 1448640, 1611612, 1790680, 2014515, 2148816, 2686020, 2865088, 2897280, 3223224, 3581360, 4029030, 4297632, 5372040, 5730176, 6446448, 7162720, 8058060, 8595264, 10744080, 12892896, 14325440, 16116120, 17190528, 21488160, 25785792, 28650880, 32232240, 42976320, 51571584, 64464480, 85952640, 128928960, 257857920]

約数ペア:

[(1, 257857920), (2, 128928960), (3, 85952640), (4, 64464480), (5, 51571584), (6, 42976320), (8, 32232240), (9, 28650880), (10, 25785792), (12, 21488160), (15, 17190528), (16, 16116120), (18, 14325440), (20, 12892896), (24, 10744080), (30, 8595264), (32, 8058060), (36, 7162720), (40, 6446448), (45, 5730176), (48, 5372040), (60, 4297632), (64, 4029030), (72, 3581360), (80, 3223224), (89, 2897280), (90, 2865088), (96, 2686020), (120, 2148816), (128, 2014515), (144, 1790680), (160, 1611612), (178, 1448640), (180, 1432544), (192, 1343010), (240, 1074408), (267, 965760), (288, 895340), (320, 805806), (356, 724320), (360, 716272), (384, 671505), (445, 579456), (480, 537204), (503, 512640), (534, 482880), (576, 447670), (640, 402903), (712, 362160), (720, 358136), (801, 321920), (890, 289728), (960, 268602), (1006, 256320), (1068, 241440), (1152, 223835), (1335, 193152), (1424, 181080), (1440, 179068), (1509, 170880), (1602, 160960), (1780, 144864), (1920, 134301), (2012, 128160), (2136, 120720), (2515, 102528), (2670, 96576), (2848, 90540), (2880, 89534), (3018, 85440), (3204, 80480), (3560, 72432), (4005, 64384), (4024, 64080), (4272, 60360), (4527, 56960), (5030, 51264), (5340, 48288), (5696, 45270), (5760, 44767), (6036, 42720), (6408, 40240), (7120, 36216), (7545, 34176), (8010, 32192), (8048, 32040), (8544, 30180), (9054, 28480), (10060, 25632), (10680, 24144), (11392, 22635), (12072, 21360), (12816, 20120), (14240, 18108), (15090, 17088), (16020, 16096)]