128289889

素因数分解:

$7^3\times {\mathrm{13}}^1\times {\mathrm{28771}}^1$

素因数の和:28805

約数の個数: 16

約数和(自身を含む): 161123200

約数和(自身を除く): 32833311

約数列:

[1, 7, 13, 49, 91, 343, 637, 4459, 28771, 201397, 374023, 1409779, 2618161, 9868453, 18327127, 128289889]

約数ペア:

[(1, 128289889), (7, 18327127), (13, 9868453), (49, 2618161), (91, 1409779), (343, 374023), (637, 201397), (4459, 28771)]