20139007

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{2909}}^1$

素因数の和:2982

約数の個数: 16

約数和(自身を含む): 24583680

約数和(自身を除く): 4444673

約数列:

[1, 7, 23, 43, 161, 301, 989, 2909, 6923, 20363, 66907, 125087, 468349, 875609, 2877001, 20139007]

約数ペア:

[(1, 20139007), (7, 2877001), (23, 875609), (43, 468349), (161, 125087), (301, 66907), (989, 20363), (2909, 6923)]