20581256

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{135403}}^1$

素因数の和:135428

約数の個数: 16

約数和(自身を含む): 40621200

約数和(自身を除く): 20039944

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 135403, 270806, 541612, 1083224, 2572657, 5145314, 10290628, 20581256]

約数ペア:

[(1, 20581256), (2, 10290628), (4, 5145314), (8, 2572657), (19, 1083224), (38, 541612), (76, 270806), (152, 135403)]