81342720

素因数分解:

$2^8\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{307}}^1$

素因数の和:357

約数の個数: 216

約数和(自身を含む): 294630336

約数和(自身を除く): 213287616

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 30, 32, 36, 40, 45, 46, 48, 60, 64, 69, 72, 80, 90, 92, 96, 115, 120, 128, 138, 144, 160, 180, 184, 192, 207, 230, 240, 256, 276, 288, 307, 320, 345, 360, 368, 384, 414, 460, 480, 552, 576, 614, 640, 690, 720, 736, 768, 828, 920, 921, 960, 1035, 1104, 1152, 1228, 1280, 1380, 1440, 1472, 1535, 1656, 1840, 1842, 1920, 2070, 2208, 2304, 2456, 2760, 2763, 2880, 2944, 3070, 3312, 3680, 3684, 3840, 4140, 4416, 4605, 4912, 5520, 5526, 5760, 5888, 6140, 6624, 7061, 7360, 7368, 8280, 8832, 9210, 9824, 11040, 11052, 11520, 12280, 13248, 13815, 14122, 14720, 14736, 16560, 17664, 18420, 19648, 21183, 22080, 22104, 24560, 26496, 27630, 28244, 29440, 29472, 33120, 35305, 36840, 39296, 42366, 44160, 44208, 49120, 52992, 55260, 56488, 58944, 63549, 66240, 70610, 73680, 78592, 84732, 88320, 88416, 98240, 105915, 110520, 112976, 117888, 127098, 132480, 141220, 147360, 169464, 176832, 196480, 211830, 221040, 225952, 235776, 254196, 264960, 282440, 294720, 317745, 338928, 353664, 392960, 423660, 442080, 451904, 508392, 564880, 589440, 635490, 677856, 707328, 847320, 884160, 903808, 1016784, 1129760, 1178880, 1270980, 1355712, 1694640, 1768320, 1807616, 2033568, 2259520, 2541960, 2711424, 3389280, 3536640, 4067136, 4519040, 5083920, 5422848, 6778560, 8134272, 9038080, 10167840, 13557120, 16268544, 20335680, 27114240, 40671360, 81342720]

約数ペア:

[(1, 81342720), (2, 40671360), (3, 27114240), (4, 20335680), (5, 16268544), (6, 13557120), (8, 10167840), (9, 9038080), (10, 8134272), (12, 6778560), (15, 5422848), (16, 5083920), (18, 4519040), (20, 4067136), (23, 3536640), (24, 3389280), (30, 2711424), (32, 2541960), (36, 2259520), (40, 2033568), (45, 1807616), (46, 1768320), (48, 1694640), (60, 1355712), (64, 1270980), (69, 1178880), (72, 1129760), (80, 1016784), (90, 903808), (92, 884160), (96, 847320), (115, 707328), (120, 677856), (128, 635490), (138, 589440), (144, 564880), (160, 508392), (180, 451904), (184, 442080), (192, 423660), (207, 392960), (230, 353664), (240, 338928), (256, 317745), (276, 294720), (288, 282440), (307, 264960), (320, 254196), (345, 235776), (360, 225952), (368, 221040), (384, 211830), (414, 196480), (460, 176832), (480, 169464), (552, 147360), (576, 141220), (614, 132480), (640, 127098), (690, 117888), (720, 112976), (736, 110520), (768, 105915), (828, 98240), (920, 88416), (921, 88320), (960, 84732), (1035, 78592), (1104, 73680), (1152, 70610), (1228, 66240), (1280, 63549), (1380, 58944), (1440, 56488), (1472, 55260), (1535, 52992), (1656, 49120), (1840, 44208), (1842, 44160), (1920, 42366), (2070, 39296), (2208, 36840), (2304, 35305), (2456, 33120), (2760, 29472), (2763, 29440), (2880, 28244), (2944, 27630), (3070, 26496), (3312, 24560), (3680, 22104), (3684, 22080), (3840, 21183), (4140, 19648), (4416, 18420), (4605, 17664), (4912, 16560), (5520, 14736), (5526, 14720), (5760, 14122), (5888, 13815), (6140, 13248), (6624, 12280), (7061, 11520), (7360, 11052), (7368, 11040), (8280, 9824), (8832, 9210)]