20321504

素因数分解:

$2^5\times 7^1\times {\mathrm{257}}^1\times {\mathrm{353}}^1$

素因数の和:627

約数の個数: 48

約数和(自身を含む): 46031328

約数和(自身を除く): 25709824

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 224, 257, 353, 514, 706, 1028, 1412, 1799, 2056, 2471, 2824, 3598, 4112, 4942, 5648, 7196, 8224, 9884, 11296, 14392, 19768, 28784, 39536, 57568, 79072, 90721, 181442, 362884, 635047, 725768, 1270094, 1451536, 2540188, 2903072, 5080376, 10160752, 20321504]

約数ペア:

[(1, 20321504), (2, 10160752), (4, 5080376), (7, 2903072), (8, 2540188), (14, 1451536), (16, 1270094), (28, 725768), (32, 635047), (56, 362884), (112, 181442), (224, 90721), (257, 79072), (353, 57568), (514, 39536), (706, 28784), (1028, 19768), (1412, 14392), (1799, 11296), (2056, 9884), (2471, 8224), (2824, 7196), (3598, 5648), (4112, 4942)]