21493479956

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{1041149}}^1$

素因数の和:1041563

約数の個数: 24

約数和(自身を含む): 40609014600

約数和(自身を除く): 19115534644

約数列:

[1, 2, 4, 13, 26, 52, 397, 794, 1588, 5161, 10322, 20644, 1041149, 2082298, 4164596, 13534937, 27069874, 54139748, 413336153, 826672306, 1653344612, 5373369989, 10746739978, 21493479956]

約数ペア:

[(1, 21493479956), (2, 10746739978), (4, 5373369989), (13, 1653344612), (26, 826672306), (52, 413336153), (397, 54139748), (794, 27069874), (1588, 13534937), (5161, 4164596), (10322, 2082298), (20644, 1041149)]