28720263

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{66947}}^1$

素因数の和:66974

約数の個数: 16

約数和(自身を含む): 44989056

約数和(自身を除く): 16268793

約数列:

[1, 3, 11, 13, 33, 39, 143, 429, 66947, 200841, 736417, 870311, 2209251, 2610933, 9573421, 28720263]

約数ペア:

[(1, 28720263), (3, 9573421), (11, 2610933), (13, 2209251), (33, 870311), (39, 736417), (143, 200841), (429, 66947)]