18320337

素因数分解:

$3^4\times 7^1\times {\mathrm{79}}^1\times {\mathrm{409}}^1$

素因数の和:507

約数の個数: 40

約数和(自身を含む): 31750400

約数和(自身を除く): 13430063

約数列:

[1, 3, 7, 9, 21, 27, 63, 79, 81, 189, 237, 409, 553, 567, 711, 1227, 1659, 2133, 2863, 3681, 4977, 6399, 8589, 11043, 14931, 25767, 32311, 33129, 44793, 77301, 96933, 226177, 231903, 290799, 678531, 872397, 2035593, 2617191, 6106779, 18320337]

約数ペア:

[(1, 18320337), (3, 6106779), (7, 2617191), (9, 2035593), (21, 872397), (27, 678531), (63, 290799), (79, 231903), (81, 226177), (189, 96933), (237, 77301), (409, 44793), (553, 33129), (567, 32311), (711, 25767), (1227, 14931), (1659, 11043), (2133, 8589), (2863, 6399), (3681, 4977)]