20738291

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{241}}^1\times {\mathrm{647}}^1$

素因数の和:914

約数の個数: 16

約数和(自身を含む): 25090560

約数和(自身を除く): 4352269

約数列:

[1, 7, 19, 133, 241, 647, 1687, 4529, 4579, 12293, 32053, 86051, 155927, 1091489, 2962613, 20738291]

約数ペア:

[(1, 20738291), (7, 2962613), (19, 1091489), (133, 155927), (241, 86051), (647, 32053), (1687, 12293), (4529, 4579)]