20995887

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{13537}}^1$

素因数の和:13598

約数の個数: 16

約数和(自身を含む): 31191552

約数和(自身を除く): 10195665

約数列:

[1, 3, 11, 33, 47, 141, 517, 1551, 13537, 40611, 148907, 446721, 636239, 1908717, 6998629, 20995887]

約数ペア:

[(1, 20995887), (3, 6998629), (11, 1908717), (33, 636239), (47, 446721), (141, 148907), (517, 40611), (1551, 13537)]