20425821

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{7817}}^1$

素因数の和:7900

約数の個数: 16

約数和(自身を含む): 29770944

約数和(自身を除く): 9345123

約数列:

[1, 3, 13, 39, 67, 201, 871, 2613, 7817, 23451, 101621, 304863, 523739, 1571217, 6808607, 20425821]

約数ペア:

[(1, 20425821), (3, 6808607), (13, 1571217), (39, 523739), (67, 304863), (201, 101621), (871, 23451), (2613, 7817)]