21219840

素因数分解:

$2^9\times 3^3\times 5^1\times {\mathrm{307}}^1$

素因数の和:339

約数の個数: 160

約数和(自身を含む): 75620160

約数和(自身を除く): 54400320

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, 307, 320, 360, 384, 432, 480, 512, 540, 576, 614, 640, 720, 768, 864, 921, 960, 1080, 1152, 1228, 1280, 1440, 1535, 1536, 1728, 1842, 1920, 2160, 2304, 2456, 2560, 2763, 2880, 3070, 3456, 3684, 3840, 4320, 4605, 4608, 4912, 5526, 5760, 6140, 6912, 7368, 7680, 8289, 8640, 9210, 9824, 11052, 11520, 12280, 13815, 13824, 14736, 16578, 17280, 18420, 19648, 22104, 23040, 24560, 27630, 29472, 33156, 34560, 36840, 39296, 41445, 44208, 49120, 55260, 58944, 66312, 69120, 73680, 78592, 82890, 88416, 98240, 110520, 117888, 132624, 147360, 157184, 165780, 176832, 196480, 221040, 235776, 265248, 294720, 331560, 353664, 392960, 442080, 471552, 530496, 589440, 663120, 707328, 785920, 884160, 1060992, 1178880, 1326240, 1414656, 1768320, 2121984, 2357760, 2652480, 3536640, 4243968, 5304960, 7073280, 10609920, 21219840]

約数ペア:

[(1, 21219840), (2, 10609920), (3, 7073280), (4, 5304960), (5, 4243968), (6, 3536640), (8, 2652480), (9, 2357760), (10, 2121984), (12, 1768320), (15, 1414656), (16, 1326240), (18, 1178880), (20, 1060992), (24, 884160), (27, 785920), (30, 707328), (32, 663120), (36, 589440), (40, 530496), (45, 471552), (48, 442080), (54, 392960), (60, 353664), (64, 331560), (72, 294720), (80, 265248), (90, 235776), (96, 221040), (108, 196480), (120, 176832), (128, 165780), (135, 157184), (144, 147360), (160, 132624), (180, 117888), (192, 110520), (216, 98240), (240, 88416), (256, 82890), (270, 78592), (288, 73680), (307, 69120), (320, 66312), (360, 58944), (384, 55260), (432, 49120), (480, 44208), (512, 41445), (540, 39296), (576, 36840), (614, 34560), (640, 33156), (720, 29472), (768, 27630), (864, 24560), (921, 23040), (960, 22104), (1080, 19648), (1152, 18420), (1228, 17280), (1280, 16578), (1440, 14736), (1535, 13824), (1536, 13815), (1728, 12280), (1842, 11520), (1920, 11052), (2160, 9824), (2304, 9210), (2456, 8640), (2560, 8289), (2763, 7680), (2880, 7368), (3070, 6912), (3456, 6140), (3684, 5760), (3840, 5526), (4320, 4912), (4605, 4608)]