18187821

素因数分解:

$3^6\times {\mathrm{61}}^1\times {\mathrm{409}}^1$

素因数の和:488

約数の個数: 28

約数和(自身を含む): 27784060

約数和(自身を除く): 9596239

約数列:

[1, 3, 9, 27, 61, 81, 183, 243, 409, 549, 729, 1227, 1647, 3681, 4941, 11043, 14823, 24949, 33129, 44469, 74847, 99387, 224541, 298161, 673623, 2020869, 6062607, 18187821]

約数ペア:

[(1, 18187821), (3, 6062607), (9, 2020869), (27, 673623), (61, 298161), (81, 224541), (183, 99387), (243, 74847), (409, 44469), (549, 33129), (729, 24949), (1227, 14823), (1647, 11043), (3681, 4941)]