12155920

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{443}}^1$

素因数の和:477

約数の個数: 80

約数和(自身を含む): 33033600

約数和(自身を除く): 20877680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 343, 392, 443, 490, 560, 686, 784, 886, 980, 1372, 1715, 1772, 1960, 2215, 2744, 3101, 3430, 3544, 3920, 4430, 5488, 6202, 6860, 7088, 8860, 12404, 13720, 15505, 17720, 21707, 24808, 27440, 31010, 35440, 43414, 49616, 62020, 86828, 108535, 124040, 151949, 173656, 217070, 248080, 303898, 347312, 434140, 607796, 759745, 868280, 1215592, 1519490, 1736560, 2431184, 3038980, 6077960, 12155920]

約数ペア:

[(1, 12155920), (2, 6077960), (4, 3038980), (5, 2431184), (7, 1736560), (8, 1519490), (10, 1215592), (14, 868280), (16, 759745), (20, 607796), (28, 434140), (35, 347312), (40, 303898), (49, 248080), (56, 217070), (70, 173656), (80, 151949), (98, 124040), (112, 108535), (140, 86828), (196, 62020), (245, 49616), (280, 43414), (343, 35440), (392, 31010), (443, 27440), (490, 24808), (560, 21707), (686, 17720), (784, 15505), (886, 13720), (980, 12404), (1372, 8860), (1715, 7088), (1772, 6860), (1960, 6202), (2215, 5488), (2744, 4430), (3101, 3920), (3430, 3544)]