18671667

素因数分解:

$3^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{7001}}^1$

素因数の和:7138

約数の個数: 16

約数和(自身を含む): 28680192

約数和(自身を除く): 10008525

約数列:

[1, 3, 7, 21, 127, 381, 889, 2667, 7001, 21003, 49007, 147021, 889127, 2667381, 6223889, 18671667]

約数ペア:

[(1, 18671667), (3, 6223889), (7, 2667381), (21, 889127), (127, 147021), (381, 49007), (889, 21003), (2667, 7001)]