12887181

素因数分解:

$3^4\times {\mathrm{389}}^1\times {\mathrm{409}}^1$

素因数の和:810

約数の個数: 20

約数和(自身を含む): 19347900

約数和(自身を除く): 6460719

約数列:

[1, 3, 9, 27, 81, 389, 409, 1167, 1227, 3501, 3681, 10503, 11043, 31509, 33129, 159101, 477303, 1431909, 4295727, 12887181]

約数ペア:

[(1, 12887181), (3, 4295727), (9, 1431909), (27, 477303), (81, 159101), (389, 33129), (409, 31509), (1167, 11043), (1227, 10503), (3501, 3681)]