20488880

素因数分解:

$2^4\times 5^1\times {\mathrm{193}}^1\times {\mathrm{1327}}^1$

素因数の和:1533

約数の個数: 40

約数和(自身を含む): 47919552

約数和(自身を除く): 27430672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 193, 386, 772, 965, 1327, 1544, 1930, 2654, 3088, 3860, 5308, 6635, 7720, 10616, 13270, 15440, 21232, 26540, 53080, 106160, 256111, 512222, 1024444, 1280555, 2048888, 2561110, 4097776, 5122220, 10244440, 20488880]

約数ペア:

[(1, 20488880), (2, 10244440), (4, 5122220), (5, 4097776), (8, 2561110), (10, 2048888), (16, 1280555), (20, 1024444), (40, 512222), (80, 256111), (193, 106160), (386, 53080), (772, 26540), (965, 21232), (1327, 15440), (1544, 13270), (1930, 10616), (2654, 7720), (3088, 6635), (3860, 5308)]