21016928

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{193}}^1$

素因数の和:327

約数の個数: 48

約数和(自身を含む): 43119216

約数和(自身を除く): 22102288

約数列:

[1, 2, 4, 8, 16, 32, 41, 82, 83, 164, 166, 193, 328, 332, 386, 656, 664, 772, 1312, 1328, 1544, 2656, 3088, 3403, 6176, 6806, 7913, 13612, 15826, 16019, 27224, 31652, 32038, 54448, 63304, 64076, 108896, 126608, 128152, 253216, 256304, 512608, 656779, 1313558, 2627116, 5254232, 10508464, 21016928]

約数ペア:

[(1, 21016928), (2, 10508464), (4, 5254232), (8, 2627116), (16, 1313558), (32, 656779), (41, 512608), (82, 256304), (83, 253216), (164, 128152), (166, 126608), (193, 108896), (328, 64076), (332, 63304), (386, 54448), (656, 32038), (664, 31652), (772, 27224), (1312, 16019), (1328, 15826), (1544, 13612), (2656, 7913), (3088, 6806), (3403, 6176)]