28904239

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{461}}^1$

素因数の和:547

約数の個数: 24

約数和(自身を含む): 36523872

約数和(自身を除く): 7619633

約数列:

[1, 7, 13, 53, 91, 169, 371, 461, 689, 1183, 3227, 4823, 5993, 8957, 24433, 41951, 62699, 77909, 171031, 317629, 545363, 2223403, 4129177, 28904239]

約数ペア:

[(1, 28904239), (7, 4129177), (13, 2223403), (53, 545363), (91, 317629), (169, 171031), (371, 77909), (461, 62699), (689, 41951), (1183, 24433), (3227, 8957), (4823, 5993)]