20722688

素因数分解:

$2^{10}\times 7^3\times {\mathrm{59}}^1$

素因数の和:100

約数の個数: 88

約数和(自身を含む): 49128000

約数和(自身を除く): 28405312

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 59, 64, 98, 112, 118, 128, 196, 224, 236, 256, 343, 392, 413, 448, 472, 512, 686, 784, 826, 896, 944, 1024, 1372, 1568, 1652, 1792, 1888, 2744, 2891, 3136, 3304, 3584, 3776, 5488, 5782, 6272, 6608, 7168, 7552, 10976, 11564, 12544, 13216, 15104, 20237, 21952, 23128, 25088, 26432, 30208, 40474, 43904, 46256, 50176, 52864, 60416, 80948, 87808, 92512, 105728, 161896, 175616, 185024, 211456, 323792, 351232, 370048, 422912, 647584, 740096, 1295168, 1480192, 2590336, 2960384, 5180672, 10361344, 20722688]

約数ペア:

[(1, 20722688), (2, 10361344), (4, 5180672), (7, 2960384), (8, 2590336), (14, 1480192), (16, 1295168), (28, 740096), (32, 647584), (49, 422912), (56, 370048), (59, 351232), (64, 323792), (98, 211456), (112, 185024), (118, 175616), (128, 161896), (196, 105728), (224, 92512), (236, 87808), (256, 80948), (343, 60416), (392, 52864), (413, 50176), (448, 46256), (472, 43904), (512, 40474), (686, 30208), (784, 26432), (826, 25088), (896, 23128), (944, 21952), (1024, 20237), (1372, 15104), (1568, 13216), (1652, 12544), (1792, 11564), (1888, 10976), (2744, 7552), (2891, 7168), (3136, 6608), (3304, 6272), (3584, 5782), (3776, 5488)]