28657909

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{5011}}^1$

素因数の和:5080

約数の個数: 16

約数和(自身を含む): 35284480

約数和(自身を除く): 6626571

約数列:

[1, 7, 19, 43, 133, 301, 817, 5011, 5719, 35077, 95209, 215473, 666463, 1508311, 4093987, 28657909]

約数ペア:

[(1, 28657909), (7, 4093987), (19, 1508311), (43, 666463), (133, 215473), (301, 95209), (817, 35077), (5011, 5719)]