21081600

素因数分解:

$2^9\times 3^3\times 5^2\times {\mathrm{61}}^1$

素因数の和:98

約数の個数: 240

約数和(自身を含む): 78648240

約数和(自身を除く): 57566640

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 27, 30, 32, 36, 40, 45, 48, 50, 54, 60, 61, 64, 72, 75, 80, 90, 96, 100, 108, 120, 122, 128, 135, 144, 150, 160, 180, 183, 192, 200, 216, 225, 240, 244, 256, 270, 288, 300, 305, 320, 360, 366, 384, 400, 432, 450, 480, 488, 512, 540, 549, 576, 600, 610, 640, 675, 720, 732, 768, 800, 864, 900, 915, 960, 976, 1080, 1098, 1152, 1200, 1220, 1280, 1350, 1440, 1464, 1525, 1536, 1600, 1647, 1728, 1800, 1830, 1920, 1952, 2160, 2196, 2304, 2400, 2440, 2560, 2700, 2745, 2880, 2928, 3050, 3200, 3294, 3456, 3600, 3660, 3840, 3904, 4320, 4392, 4575, 4608, 4800, 4880, 5400, 5490, 5760, 5856, 6100, 6400, 6588, 6912, 7200, 7320, 7680, 7808, 8235, 8640, 8784, 9150, 9600, 9760, 10800, 10980, 11520, 11712, 12200, 12800, 13176, 13725, 13824, 14400, 14640, 15616, 16470, 17280, 17568, 18300, 19200, 19520, 21600, 21960, 23040, 23424, 24400, 26352, 27450, 28800, 29280, 31232, 32940, 34560, 35136, 36600, 38400, 39040, 41175, 43200, 43920, 46848, 48800, 52704, 54900, 57600, 58560, 65880, 69120, 70272, 73200, 78080, 82350, 86400, 87840, 93696, 97600, 105408, 109800, 115200, 117120, 131760, 140544, 146400, 156160, 164700, 172800, 175680, 195200, 210816, 219600, 234240, 263520, 281088, 292800, 329400, 345600, 351360, 390400, 421632, 439200, 468480, 527040, 585600, 658800, 702720, 780800, 843264, 878400, 1054080, 1171200, 1317600, 1405440, 1756800, 2108160, 2342400, 2635200, 3513600, 4216320, 5270400, 7027200, 10540800, 21081600]

約数ペア:

[(1, 21081600), (2, 10540800), (3, 7027200), (4, 5270400), (5, 4216320), (6, 3513600), (8, 2635200), (9, 2342400), (10, 2108160), (12, 1756800), (15, 1405440), (16, 1317600), (18, 1171200), (20, 1054080), (24, 878400), (25, 843264), (27, 780800), (30, 702720), (32, 658800), (36, 585600), (40, 527040), (45, 468480), (48, 439200), (50, 421632), (54, 390400), (60, 351360), (61, 345600), (64, 329400), (72, 292800), (75, 281088), (80, 263520), (90, 234240), (96, 219600), (100, 210816), (108, 195200), (120, 175680), (122, 172800), (128, 164700), (135, 156160), (144, 146400), (150, 140544), (160, 131760), (180, 117120), (183, 115200), (192, 109800), (200, 105408), (216, 97600), (225, 93696), (240, 87840), (244, 86400), (256, 82350), (270, 78080), (288, 73200), (300, 70272), (305, 69120), (320, 65880), (360, 58560), (366, 57600), (384, 54900), (400, 52704), (432, 48800), (450, 46848), (480, 43920), (488, 43200), (512, 41175), (540, 39040), (549, 38400), (576, 36600), (600, 35136), (610, 34560), (640, 32940), (675, 31232), (720, 29280), (732, 28800), (768, 27450), (800, 26352), (864, 24400), (900, 23424), (915, 23040), (960, 21960), (976, 21600), (1080, 19520), (1098, 19200), (1152, 18300), (1200, 17568), (1220, 17280), (1280, 16470), (1350, 15616), (1440, 14640), (1464, 14400), (1525, 13824), (1536, 13725), (1600, 13176), (1647, 12800), (1728, 12200), (1800, 11712), (1830, 11520), (1920, 10980), (1952, 10800), (2160, 9760), (2196, 9600), (2304, 9150), (2400, 8784), (2440, 8640), (2560, 8235), (2700, 7808), (2745, 7680), (2880, 7320), (2928, 7200), (3050, 6912), (3200, 6588), (3294, 6400), (3456, 6100), (3600, 5856), (3660, 5760), (3840, 5490), (3904, 5400), (4320, 4880), (4392, 4800), (4575, 4608)]