20957889

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{607}}^1\times {\mathrm{677}}^1$

素因数の和:1304

約数の個数: 16

約数和(自身を含む): 29680128

約数和(自身を除く): 8722239

約数列:

[1, 3, 17, 51, 607, 677, 1821, 2031, 10319, 11509, 30957, 34527, 410939, 1232817, 6985963, 20957889]

約数ペア:

[(1, 20957889), (3, 6985963), (17, 1232817), (51, 410939), (607, 34527), (677, 30957), (1821, 11509), (2031, 10319)]