28751265

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{27779}}^1$

素因数の和:27813

約数の個数: 24

約数和(自身を含む): 52004160

約数和(自身を除く): 23252895

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 27779, 83337, 138895, 250011, 416685, 638917, 1250055, 1916751, 3194585, 5750253, 9583755, 28751265]

約数ペア:

[(1, 28751265), (3, 9583755), (5, 5750253), (9, 3194585), (15, 1916751), (23, 1250055), (45, 638917), (69, 416685), (115, 250011), (207, 138895), (345, 83337), (1035, 27779)]