28702009

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{1031}}^1$

素因数の和:1176

約数の個数: 16

約数和(自身を含む): 33981696

約数和(自身を除く): 5279687

約数列:

[1, 7, 41, 97, 287, 679, 1031, 3977, 7217, 27839, 42271, 100007, 295897, 700049, 4100287, 28702009]

約数ペア:

[(1, 28702009), (7, 4100287), (41, 700049), (97, 295897), (287, 100007), (679, 42271), (1031, 27839), (3977, 7217)]