51981021

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{22129}}^1$

素因数の和:22170

約数の個数: 20

約数和(自身を含む): 80331900

約数和(自身を除く): 28350879

約数列:

[1, 3, 9, 27, 29, 81, 87, 261, 783, 2349, 22129, 66387, 199161, 597483, 641741, 1792449, 1925223, 5775669, 17327007, 51981021]

約数ペア:

[(1, 51981021), (3, 17327007), (9, 5775669), (27, 1925223), (29, 1792449), (81, 641741), (87, 597483), (261, 199161), (783, 66387), (2349, 22129)]