19804419

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{8431}}^1$

素因数の和:8472

約数の個数: 20

約数和(自身を含む): 30608160

約数和(自身を除く): 10803741

約数列:

[1, 3, 9, 27, 29, 81, 87, 261, 783, 2349, 8431, 25293, 75879, 227637, 244499, 682911, 733497, 2200491, 6601473, 19804419]

約数ペア:

[(1, 19804419), (3, 6601473), (9, 2200491), (27, 733497), (29, 682911), (81, 244499), (87, 227637), (261, 75879), (783, 25293), (2349, 8431)]