20781105

素因数分解:

$3^1\times 5^1\times {\mathrm{337}}^1\times {\mathrm{4111}}^1$

素因数の和:4456

約数の個数: 16

約数和(自身を含む): 33356544

約数和(自身を除く): 12575439

約数列:

[1, 3, 5, 15, 337, 1011, 1685, 4111, 5055, 12333, 20555, 61665, 1385407, 4156221, 6927035, 20781105]

約数ペア:

[(1, 20781105), (3, 6927035), (5, 4156221), (15, 1385407), (337, 61665), (1011, 20555), (1685, 12333), (4111, 5055)]