20942728

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{36871}}^1$

素因数の和:36948

約数の個数: 16

約数和(自身を含む): 39821760

約数和(自身を除く): 18879032

約数列:

[1, 2, 4, 8, 71, 142, 284, 568, 36871, 73742, 147484, 294968, 2617841, 5235682, 10471364, 20942728]

約数ペア:

[(1, 20942728), (2, 10471364), (4, 5235682), (8, 2617841), (71, 294968), (142, 147484), (284, 73742), (568, 36871)]