28991223

素因数分解:

$3^3\times {\mathrm{41}}^1\times {\mathrm{26189}}^1$

素因数の和:26239

約数の個数: 16

約数和(自身を含む): 43999200

約数和(自身を除く): 15007977

約数列:

[1, 3, 9, 27, 41, 123, 369, 1107, 26189, 78567, 235701, 707103, 1073749, 3221247, 9663741, 28991223]

約数ペア:

[(1, 28991223), (3, 9663741), (9, 3221247), (27, 1073749), (41, 707103), (123, 235701), (369, 78567), (1107, 26189)]