20780756

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{2153}}^1$

素因数の和:2303

約数の個数: 24

約数和(自身を含む): 38599680

約数和(自身を除く): 17818924

約数列:

[1, 2, 4, 19, 38, 76, 127, 254, 508, 2153, 2413, 4306, 4826, 8612, 9652, 40907, 81814, 163628, 273431, 546862, 1093724, 5195189, 10390378, 20780756]

約数ペア:

[(1, 20780756), (2, 10390378), (4, 5195189), (19, 1093724), (38, 546862), (76, 273431), (127, 163628), (254, 81814), (508, 40907), (2153, 9652), (2413, 8612), (4306, 4826)]