21490852

素因数分解:

$2^2\times {\mathrm{1103}}^1\times {\mathrm{4871}}^1$

素因数の和:5978

約数の個数: 12

約数和(自身を含む): 37650816

約数和(自身を除く): 16159964

約数列:

[1, 2, 4, 1103, 2206, 4412, 4871, 9742, 19484, 5372713, 10745426, 21490852]

約数ペア:

[(1, 21490852), (2, 10745426), (4, 5372713), (1103, 19484), (2206, 9742), (4412, 4871)]