18784143

素因数分解:

$3^8\times 7^1\times {\mathrm{409}}^1$

素因数の和:440

約数の個数: 36

約数和(自身を含む): 32278480

約数和(自身を除く): 13494337

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 409, 567, 729, 1227, 1701, 2187, 2863, 3681, 5103, 6561, 8589, 11043, 15309, 25767, 33129, 45927, 77301, 99387, 231903, 298161, 695709, 894483, 2087127, 2683449, 6261381, 18784143]

約数ペア:

[(1, 18784143), (3, 6261381), (7, 2683449), (9, 2087127), (21, 894483), (27, 695709), (63, 298161), (81, 231903), (189, 99387), (243, 77301), (409, 45927), (567, 33129), (729, 25767), (1227, 15309), (1701, 11043), (2187, 8589), (2863, 6561), (3681, 5103)]