81941760

素因数分解:

$2^8\times 3^3\times 5^1\times {\mathrm{2371}}^1$

素因数の和:2401

約数の個数: 144

約数和(自身を含む): 290902080

約数和(自身を除く): 208960320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 120, 128, 135, 144, 160, 180, 192, 216, 240, 256, 270, 288, 320, 360, 384, 432, 480, 540, 576, 640, 720, 768, 864, 960, 1080, 1152, 1280, 1440, 1728, 1920, 2160, 2304, 2371, 2880, 3456, 3840, 4320, 4742, 5760, 6912, 7113, 8640, 9484, 11520, 11855, 14226, 17280, 18968, 21339, 23710, 28452, 34560, 35565, 37936, 42678, 47420, 56904, 64017, 71130, 75872, 85356, 94840, 106695, 113808, 128034, 142260, 151744, 170712, 189680, 213390, 227616, 256068, 284520, 303488, 320085, 341424, 379360, 426780, 455232, 512136, 569040, 606976, 640170, 682848, 758720, 853560, 910464, 1024272, 1138080, 1280340, 1365696, 1517440, 1707120, 1820928, 2048544, 2276160, 2560680, 2731392, 3034880, 3414240, 4097088, 4552320, 5121360, 5462784, 6828480, 8194176, 9104640, 10242720, 13656960, 16388352, 20485440, 27313920, 40970880, 81941760]

約数ペア:

[(1, 81941760), (2, 40970880), (3, 27313920), (4, 20485440), (5, 16388352), (6, 13656960), (8, 10242720), (9, 9104640), (10, 8194176), (12, 6828480), (15, 5462784), (16, 5121360), (18, 4552320), (20, 4097088), (24, 3414240), (27, 3034880), (30, 2731392), (32, 2560680), (36, 2276160), (40, 2048544), (45, 1820928), (48, 1707120), (54, 1517440), (60, 1365696), (64, 1280340), (72, 1138080), (80, 1024272), (90, 910464), (96, 853560), (108, 758720), (120, 682848), (128, 640170), (135, 606976), (144, 569040), (160, 512136), (180, 455232), (192, 426780), (216, 379360), (240, 341424), (256, 320085), (270, 303488), (288, 284520), (320, 256068), (360, 227616), (384, 213390), (432, 189680), (480, 170712), (540, 151744), (576, 142260), (640, 128034), (720, 113808), (768, 106695), (864, 94840), (960, 85356), (1080, 75872), (1152, 71130), (1280, 64017), (1440, 56904), (1728, 47420), (1920, 42678), (2160, 37936), (2304, 35565), (2371, 34560), (2880, 28452), (3456, 23710), (3840, 21339), (4320, 18968), (4742, 17280), (5760, 14226), (6912, 11855), (7113, 11520), (8640, 9484)]