19656507

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{647}}^1$

素因数の和:723

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 10825413

約数列:

[1, 3, 13, 19, 39, 41, 57, 123, 247, 533, 647, 741, 779, 1599, 1941, 2337, 8411, 10127, 12293, 25233, 26527, 30381, 36879, 79581, 159809, 344851, 479427, 504013, 1034553, 1512039, 6552169, 19656507]

約数ペア:

[(1, 19656507), (3, 6552169), (13, 1512039), (19, 1034553), (39, 504013), (41, 479427), (57, 344851), (123, 159809), (247, 79581), (533, 36879), (647, 30381), (741, 26527), (779, 25233), (1599, 12293), (1941, 10127), (2337, 8411)]