21143391

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{2843}}^1$

素因数の和:2950

約数の個数: 16

約数和(自身を含む): 29395584

約数和(自身を除く): 8252193

約数列:

[1, 3, 37, 67, 111, 201, 2479, 2843, 7437, 8529, 105191, 190481, 315573, 571443, 7047797, 21143391]

約数ペア:

[(1, 21143391), (3, 7047797), (37, 571443), (67, 315573), (111, 190481), (201, 105191), (2479, 8529), (2843, 7437)]