20741709

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{1787}}^1$

素因数の和:1916

約数の個数: 16

約数和(自身を含む): 28579392

約数和(自身を除く): 7837683

約数列:

[1, 3, 53, 73, 159, 219, 1787, 3869, 5361, 11607, 94711, 130451, 284133, 391353, 6913903, 20741709]

約数ペア:

[(1, 20741709), (3, 6913903), (53, 391353), (73, 284133), (159, 130451), (219, 94711), (1787, 11607), (3869, 5361)]