28405905

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{172157}}^1$

素因数の和:172176

約数の個数: 16

約数和(自身を含む): 49581504

約数和(自身を除く): 21175599

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 172157, 516471, 860785, 1893727, 2582355, 5681181, 9468635, 28405905]

約数ペア:

[(1, 28405905), (3, 9468635), (5, 5681181), (11, 2582355), (15, 1893727), (33, 860785), (55, 516471), (165, 172157)]