20597857

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{4127}}^1$

素因数の和:4188

約数の個数: 16

約数和(自身を含む): 25362432

約数和(自身を除く): 4764575

約数列:

[1, 7, 23, 31, 161, 217, 713, 4127, 4991, 28889, 94921, 127937, 664447, 895559, 2942551, 20597857]

約数ペア:

[(1, 20597857), (7, 2942551), (23, 895559), (31, 664447), (161, 127937), (217, 94921), (713, 28889), (4127, 4991)]