20868533

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1\times {\mathrm{211}}^1$

素因数の和:488

約数の個数: 16

約数和(自身を含む): 24422400

約数和(自身を除く): 3553867

約数列:

[1, 7, 71, 199, 211, 497, 1393, 1477, 14129, 14981, 41989, 98903, 104867, 293923, 2981219, 20868533]

約数ペア:

[(1, 20868533), (7, 2981219), (71, 293923), (199, 104867), (211, 98903), (497, 41989), (1393, 14981), (1477, 14129)]