20383888

素因数分解:

$2^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{193}}^1$

素因数の和:272

約数の個数: 80

約数和(自身を含む): 48496896

約数和(自身を除く): 28113008

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 41, 46, 56, 82, 92, 112, 161, 164, 184, 193, 287, 322, 328, 368, 386, 574, 644, 656, 772, 943, 1148, 1288, 1351, 1544, 1886, 2296, 2576, 2702, 3088, 3772, 4439, 4592, 5404, 6601, 7544, 7913, 8878, 10808, 13202, 15088, 15826, 17756, 21616, 26404, 31073, 31652, 35512, 52808, 55391, 62146, 63304, 71024, 105616, 110782, 124292, 126608, 181999, 221564, 248584, 363998, 443128, 497168, 727996, 886256, 1273993, 1455992, 2547986, 2911984, 5095972, 10191944, 20383888]

約数ペア:

[(1, 20383888), (2, 10191944), (4, 5095972), (7, 2911984), (8, 2547986), (14, 1455992), (16, 1273993), (23, 886256), (28, 727996), (41, 497168), (46, 443128), (56, 363998), (82, 248584), (92, 221564), (112, 181999), (161, 126608), (164, 124292), (184, 110782), (193, 105616), (287, 71024), (322, 63304), (328, 62146), (368, 55391), (386, 52808), (574, 35512), (644, 31652), (656, 31073), (772, 26404), (943, 21616), (1148, 17756), (1288, 15826), (1351, 15088), (1544, 13202), (1886, 10808), (2296, 8878), (2576, 7913), (2702, 7544), (3088, 6601), (3772, 5404), (4439, 4592)]