21137280

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:232

約数の個数: 128

約数和(自身を含む): 68666400

約数和(自身を除く): 47529120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 101, 109, 120, 128, 160, 192, 202, 218, 240, 303, 320, 327, 384, 404, 436, 480, 505, 545, 606, 640, 654, 808, 872, 960, 1010, 1090, 1212, 1308, 1515, 1616, 1635, 1744, 1920, 2020, 2180, 2424, 2616, 3030, 3232, 3270, 3488, 4040, 4360, 4848, 5232, 6060, 6464, 6540, 6976, 8080, 8720, 9696, 10464, 11009, 12120, 12928, 13080, 13952, 16160, 17440, 19392, 20928, 22018, 24240, 26160, 32320, 33027, 34880, 38784, 41856, 44036, 48480, 52320, 55045, 64640, 66054, 69760, 88072, 96960, 104640, 110090, 132108, 165135, 176144, 193920, 209280, 220180, 264216, 330270, 352288, 440360, 528432, 660540, 704576, 880720, 1056864, 1321080, 1409152, 1761440, 2113728, 2642160, 3522880, 4227456, 5284320, 7045760, 10568640, 21137280]

約数ペア:

[(1, 21137280), (2, 10568640), (3, 7045760), (4, 5284320), (5, 4227456), (6, 3522880), (8, 2642160), (10, 2113728), (12, 1761440), (15, 1409152), (16, 1321080), (20, 1056864), (24, 880720), (30, 704576), (32, 660540), (40, 528432), (48, 440360), (60, 352288), (64, 330270), (80, 264216), (96, 220180), (101, 209280), (109, 193920), (120, 176144), (128, 165135), (160, 132108), (192, 110090), (202, 104640), (218, 96960), (240, 88072), (303, 69760), (320, 66054), (327, 64640), (384, 55045), (404, 52320), (436, 48480), (480, 44036), (505, 41856), (545, 38784), (606, 34880), (640, 33027), (654, 32320), (808, 26160), (872, 24240), (960, 22018), (1010, 20928), (1090, 19392), (1212, 17440), (1308, 16160), (1515, 13952), (1616, 13080), (1635, 12928), (1744, 12120), (1920, 11009), (2020, 10464), (2180, 9696), (2424, 8720), (2616, 8080), (3030, 6976), (3232, 6540), (3270, 6464), (3488, 6060), (4040, 5232), (4360, 4848)]