28973021

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{2707}}^1$

素因数の和:2864

約数の個数: 16

約数和(自身を含む): 36395520

約数和(自身を除く): 7422499

約数列:

[1, 7, 11, 77, 139, 973, 1529, 2707, 10703, 18949, 29777, 208439, 376273, 2633911, 4139003, 28973021]

約数ペア:

[(1, 28973021), (7, 4139003), (11, 2633911), (77, 376273), (139, 208439), (973, 29777), (1529, 18949), (2707, 10703)]