20911317

素因数分解:

$3^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{5563}}^1$

素因数の和:5752

約数の個数: 16

約数和(自身を含む): 32048640

約数和(自身を除く): 11137323

約数列:

[1, 3, 7, 21, 179, 537, 1253, 3759, 5563, 16689, 38941, 116823, 995777, 2987331, 6970439, 20911317]

約数ペア:

[(1, 20911317), (3, 6970439), (7, 2987331), (21, 995777), (179, 116823), (537, 38941), (1253, 16689), (3759, 5563)]