21030016

素因数分解:

$2^7\times 7^3\times {\mathrm{479}}^1$

素因数の和:514

約数の個数: 64

約数和(自身を含む): 48960000

約数和(自身を除く): 27929984

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 128, 196, 224, 343, 392, 448, 479, 686, 784, 896, 958, 1372, 1568, 1916, 2744, 3136, 3353, 3832, 5488, 6272, 6706, 7664, 10976, 13412, 15328, 21952, 23471, 26824, 30656, 43904, 46942, 53648, 61312, 93884, 107296, 164297, 187768, 214592, 328594, 375536, 429184, 657188, 751072, 1314376, 1502144, 2628752, 3004288, 5257504, 10515008, 21030016]

約数ペア:

[(1, 21030016), (2, 10515008), (4, 5257504), (7, 3004288), (8, 2628752), (14, 1502144), (16, 1314376), (28, 751072), (32, 657188), (49, 429184), (56, 375536), (64, 328594), (98, 214592), (112, 187768), (128, 164297), (196, 107296), (224, 93884), (343, 61312), (392, 53648), (448, 46942), (479, 43904), (686, 30656), (784, 26824), (896, 23471), (958, 21952), (1372, 15328), (1568, 13412), (1916, 10976), (2744, 7664), (3136, 6706), (3353, 6272), (3832, 5488)]