20157681

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{937}}^1$

素因数の和:1112

約数の個数: 16

約数和(自身を含む): 27554688

約数和(自身を除く): 7397007

約数列:

[1, 3, 71, 101, 213, 303, 937, 2811, 7171, 21513, 66527, 94637, 199581, 283911, 6719227, 20157681]

約数ペア:

[(1, 20157681), (3, 6719227), (71, 283911), (101, 199581), (213, 94637), (303, 66527), (937, 21513), (2811, 7171)]