247109211

素因数分解:

$3^4\times {\mathrm{409}}^1\times {\mathrm{7459}}^1$

素因数の和:7880

約数の個数: 20

約数和(自身を含む): 370090600

約数和(自身を除く): 122981389

約数列:

[1, 3, 9, 27, 81, 409, 1227, 3681, 7459, 11043, 22377, 33129, 67131, 201393, 604179, 3050731, 9152193, 27456579, 82369737, 247109211]

約数ペア:

[(1, 247109211), (3, 82369737), (9, 27456579), (27, 9152193), (81, 3050731), (409, 604179), (1227, 201393), (3681, 67131), (7459, 33129), (11043, 22377)]