16663887

素因数分解:

$3^4\times {\mathrm{409}}^1\times {\mathrm{503}}^1$

素因数の和:924

約数の個数: 20

約数和(自身を含む): 25003440

約数和(自身を除く): 8339553

約数列:

[1, 3, 9, 27, 81, 409, 503, 1227, 1509, 3681, 4527, 11043, 13581, 33129, 40743, 205727, 617181, 1851543, 5554629, 16663887]

約数ペア:

[(1, 16663887), (3, 5554629), (9, 1851543), (27, 617181), (81, 205727), (409, 40743), (503, 33129), (1227, 13581), (1509, 11043), (3681, 4527)]