21038656

素因数分解:

$2^6\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{317}}^1$

素因数の和:407

約数の個数: 56

約数和(自身を含む): 45070776

約数和(自身を除く): 24032120

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 61, 64, 68, 122, 136, 244, 272, 317, 488, 544, 634, 976, 1037, 1088, 1268, 1952, 2074, 2536, 3904, 4148, 5072, 5389, 8296, 10144, 10778, 16592, 19337, 20288, 21556, 33184, 38674, 43112, 66368, 77348, 86224, 154696, 172448, 309392, 328729, 344896, 618784, 657458, 1237568, 1314916, 2629832, 5259664, 10519328, 21038656]

約数ペア:

[(1, 21038656), (2, 10519328), (4, 5259664), (8, 2629832), (16, 1314916), (17, 1237568), (32, 657458), (34, 618784), (61, 344896), (64, 328729), (68, 309392), (122, 172448), (136, 154696), (244, 86224), (272, 77348), (317, 66368), (488, 43112), (544, 38674), (634, 33184), (976, 21556), (1037, 20288), (1088, 19337), (1268, 16592), (1952, 10778), (2074, 10144), (2536, 8296), (3904, 5389), (4148, 5072)]