18118989

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{15137}}^1$

素因数の和:15169

約数の個数: 24

約数和(自身を含む): 31487040

約数和(自身を除く): 13368051

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 15137, 45411, 105959, 136233, 287603, 317877, 862809, 953631, 2013221, 2588427, 6039663, 18118989]

約数ペア:

[(1, 18118989), (3, 6039663), (7, 2588427), (9, 2013221), (19, 953631), (21, 862809), (57, 317877), (63, 287603), (133, 136233), (171, 105959), (399, 45411), (1197, 15137)]