20981068

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{73877}}^1$

素因数の和:73952

約数の個数: 12

約数和(自身を含む): 37234512

約数和(自身を除く): 16253444

約数列:

[1, 2, 4, 71, 142, 284, 73877, 147754, 295508, 5245267, 10490534, 20981068]

約数ペア:

[(1, 20981068), (2, 10490534), (4, 5245267), (71, 295508), (142, 147754), (284, 73877)]