861885

素因数分解:

$3^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{179}}^1$

素因数の和:297

約数の個数: 24

約数和(自身を含む): 1516320

約数和(自身を除く): 654435

約数列:

[1, 3, 5, 9, 15, 45, 107, 179, 321, 535, 537, 895, 963, 1605, 1611, 2685, 4815, 8055, 19153, 57459, 95765, 172377, 287295, 861885]

約数ペア:

[(1, 861885), (3, 287295), (5, 172377), (9, 95765), (15, 57459), (45, 19153), (107, 8055), (179, 4815), (321, 2685), (535, 1611), (537, 1605), (895, 963)]