19947404

素因数分解:

$2^2\times {\mathrm{443}}^1\times {\mathrm{11257}}^1$

素因数の和:11704

約数の個数: 12

約数和(自身を含む): 34989864

約数和(自身を除く): 15042460

約数列:

[1, 2, 4, 443, 886, 1772, 11257, 22514, 45028, 4986851, 9973702, 19947404]

約数ペア:

[(1, 19947404), (2, 9973702), (4, 4986851), (443, 45028), (886, 22514), (1772, 11257)]