205715279

素因数分解:

$7^4\times {\mathrm{11}}^1\times {\mathrm{7789}}^1$

素因数の和:7828

約数の個数: 20

約数和(自身を含む): 261837480

約数和(自身を除く): 56122201

約数列:

[1, 7, 11, 49, 77, 343, 539, 2401, 3773, 7789, 26411, 54523, 85679, 381661, 599753, 2671627, 4198271, 18701389, 29387897, 205715279]

約数ペア:

[(1, 205715279), (7, 29387897), (11, 18701389), (49, 4198271), (77, 2671627), (343, 599753), (539, 381661), (2401, 85679), (3773, 54523), (7789, 26411)]