20257971

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{2713}}^1$

素因数の和:2866

約数の個数: 16

約数和(自身を含む): 28659840

約数和(自身を除く): 8401869

約数列:

[1, 3, 19, 57, 131, 393, 2489, 2713, 7467, 8139, 51547, 154641, 355403, 1066209, 6752657, 20257971]

約数ペア:

[(1, 20257971), (3, 6752657), (19, 1066209), (57, 355403), (131, 154641), (393, 51547), (2489, 8139), (2713, 7467)]