19903004

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{277}}^1$

素因数の和:386

約数の個数: 48

約数和(自身を含む): 40352256

約数和(自身を除く): 20449252

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 71, 92, 142, 253, 277, 284, 506, 554, 781, 1012, 1108, 1562, 1633, 3047, 3124, 3266, 6094, 6371, 6532, 12188, 12742, 17963, 19667, 25484, 35926, 39334, 70081, 71852, 78668, 140162, 216337, 280324, 432674, 452341, 865348, 904682, 1809364, 4975751, 9951502, 19903004]

約数ペア:

[(1, 19903004), (2, 9951502), (4, 4975751), (11, 1809364), (22, 904682), (23, 865348), (44, 452341), (46, 432674), (71, 280324), (92, 216337), (142, 140162), (253, 78668), (277, 71852), (284, 70081), (506, 39334), (554, 35926), (781, 25484), (1012, 19667), (1108, 17963), (1562, 12742), (1633, 12188), (3047, 6532), (3124, 6371), (3266, 6094)]