21084981

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{401}}^1\times {\mathrm{1031}}^1$

素因数の和:1452

約数の個数: 16

約数和(自身を含む): 29870208

約数和(自身を除く): 8785227

約数列:

[1, 3, 17, 51, 401, 1031, 1203, 3093, 6817, 17527, 20451, 52581, 413431, 1240293, 7028327, 21084981]

約数ペア:

[(1, 21084981), (3, 7028327), (17, 1240293), (51, 413431), (401, 52581), (1031, 20451), (1203, 17527), (3093, 6817)]