20681139

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{2311}}^1$

素因数の和:2490

約数の個数: 16

約数和(自身を含む): 29223680

約数和(自身を除く): 8542541

約数列:

[1, 3, 19, 57, 157, 471, 2311, 2983, 6933, 8949, 43909, 131727, 362827, 1088481, 6893713, 20681139]

約数ペア:

[(1, 20681139), (3, 6893713), (19, 1088481), (57, 362827), (157, 131727), (471, 43909), (2311, 8949), (2983, 6933)]