20708128

素因数分解:

$2^5\times 7^1\times {\mathrm{193}}^1\times {\mathrm{479}}^1$

素因数の和:689

約数の個数: 48

約数和(自身を含む): 46932480

約数和(自身を除く): 26224352

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 193, 224, 386, 479, 772, 958, 1351, 1544, 1916, 2702, 3088, 3353, 3832, 5404, 6176, 6706, 7664, 10808, 13412, 15328, 21616, 26824, 43232, 53648, 92447, 107296, 184894, 369788, 647129, 739576, 1294258, 1479152, 2588516, 2958304, 5177032, 10354064, 20708128]

約数ペア:

[(1, 20708128), (2, 10354064), (4, 5177032), (7, 2958304), (8, 2588516), (14, 1479152), (16, 1294258), (28, 739576), (32, 647129), (56, 369788), (112, 184894), (193, 107296), (224, 92447), (386, 53648), (479, 43232), (772, 26824), (958, 21616), (1351, 15328), (1544, 13412), (1916, 10808), (2702, 7664), (3088, 6706), (3353, 6176), (3832, 5404)]