28656905

素因数分解:

$5^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1\times {\mathrm{653}}^1$

素因数の和:856

約数の個数: 16

約数和(自身を含む): 35221824

約数和(自身を除く): 6564919

約数列:

[1, 5, 67, 131, 335, 653, 655, 3265, 8777, 43751, 43885, 85543, 218755, 427715, 5731381, 28656905]

約数ペア:

[(1, 28656905), (5, 5731381), (67, 427715), (131, 218755), (335, 85543), (653, 43885), (655, 43751), (3265, 8777)]