28405917

素因数分解:

$3^3\times {\mathrm{431}}^1\times {\mathrm{2441}}^1$

素因数の和:2881

約数の個数: 16

約数和(自身を含む): 42197760

約数和(自身を除く): 13791843

約数列:

[1, 3, 9, 27, 431, 1293, 2441, 3879, 7323, 11637, 21969, 65907, 1052071, 3156213, 9468639, 28405917]

約数ペア:

[(1, 28405917), (3, 9468639), (9, 3156213), (27, 1052071), (431, 65907), (1293, 21969), (2441, 11637), (3879, 7323)]