20707989

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{2689}}^1$

素因数の和:2860

約数の個数: 16

約数和(自身を含む): 29439360

約数和(自身を除く): 8731371

約数列:

[1, 3, 17, 51, 151, 453, 2567, 2689, 7701, 8067, 45713, 137139, 406039, 1218117, 6902663, 20707989]

約数ペア:

[(1, 20707989), (3, 6902663), (17, 1218117), (51, 406039), (151, 137139), (453, 45713), (2567, 8067), (2689, 7701)]