20537531

素因数分解:

$7^1\times {\mathrm{31}}^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:183

約数の個数: 24

約数和(自身を含む): 25166592

約数和(自身を除く): 4629061

約数列:

[1, 7, 31, 43, 71, 217, 301, 497, 961, 1333, 2201, 3053, 6727, 9331, 15407, 21371, 41323, 68231, 94643, 289261, 477617, 662501, 2933933, 20537531]

約数ペア:

[(1, 20537531), (7, 2933933), (31, 662501), (43, 477617), (71, 289261), (217, 94643), (301, 68231), (497, 41323), (961, 21371), (1333, 15407), (2201, 9331), (3053, 6727)]