20485440

素因数分解:

$2^6\times 3^3\times 5^1\times {\mathrm{2371}}^1$

素因数の和:2397

約数の個数: 112

約数和(自身を含む): 72298560

約数和(自身を除く): 51813120

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, 135, 144, 160, 180, 192, 216, 240, 270, 288, 320, 360, 432, 480, 540, 576, 720, 864, 960, 1080, 1440, 1728, 2160, 2371, 2880, 4320, 4742, 7113, 8640, 9484, 11855, 14226, 18968, 21339, 23710, 28452, 35565, 37936, 42678, 47420, 56904, 64017, 71130, 75872, 85356, 94840, 106695, 113808, 128034, 142260, 151744, 170712, 189680, 213390, 227616, 256068, 284520, 320085, 341424, 379360, 426780, 455232, 512136, 569040, 640170, 682848, 758720, 853560, 1024272, 1138080, 1280340, 1365696, 1707120, 2048544, 2276160, 2560680, 3414240, 4097088, 5121360, 6828480, 10242720, 20485440]

約数ペア:

[(1, 20485440), (2, 10242720), (3, 6828480), (4, 5121360), (5, 4097088), (6, 3414240), (8, 2560680), (9, 2276160), (10, 2048544), (12, 1707120), (15, 1365696), (16, 1280340), (18, 1138080), (20, 1024272), (24, 853560), (27, 758720), (30, 682848), (32, 640170), (36, 569040), (40, 512136), (45, 455232), (48, 426780), (54, 379360), (60, 341424), (64, 320085), (72, 284520), (80, 256068), (90, 227616), (96, 213390), (108, 189680), (120, 170712), (135, 151744), (144, 142260), (160, 128034), (180, 113808), (192, 106695), (216, 94840), (240, 85356), (270, 75872), (288, 71130), (320, 64017), (360, 56904), (432, 47420), (480, 42678), (540, 37936), (576, 35565), (720, 28452), (864, 23710), (960, 21339), (1080, 18968), (1440, 14226), (1728, 11855), (2160, 9484), (2371, 8640), (2880, 7113), (4320, 4742)]