21603568

素因数分解:

$2^4\times 7^1\times {\mathrm{192889}}^1$

素因数の和:192904

約数の個数: 20

約数和(自身を含む): 47836720

約数和(自身を除く): 26233152

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 192889, 385778, 771556, 1350223, 1543112, 2700446, 3086224, 5400892, 10801784, 21603568]

約数ペア:

[(1, 21603568), (2, 10801784), (4, 5400892), (7, 3086224), (8, 2700446), (14, 1543112), (16, 1350223), (28, 771556), (56, 385778), (112, 192889)]