20213788

素因数分解:

$2^2\times 7^1\times {\mathrm{721921}}^1$

素因数の和:721932

約数の個数: 12

約数和(自身を含む): 40427632

約数和(自身を除く): 20213844

約数列:

[1, 2, 4, 7, 14, 28, 721921, 1443842, 2887684, 5053447, 10106894, 20213788]

約数ペア:

[(1, 20213788), (2, 10106894), (4, 5053447), (7, 2887684), (14, 1443842), (28, 721921)]