20205388

素因数分解:

$2^2\times 7^1\times {\mathrm{721621}}^1$

素因数の和:721632

約数の個数: 12

約数和(自身を含む): 40410832

約数和(自身を除く): 20205444

約数列:

[1, 2, 4, 7, 14, 28, 721621, 1443242, 2886484, 5051347, 10102694, 20205388]

約数ペア:

[(1, 20205388), (2, 10102694), (4, 5051347), (7, 2886484), (14, 1443242), (28, 721621)]