20519540

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{2437}}^1$

素因数の和:2867

約数の個数: 24

約数和(自身を含む): 43211112

約数和(自身を除く): 22691572

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 2437, 4210, 4874, 8420, 9748, 12185, 24370, 48740, 1025977, 2051954, 4103908, 5129885, 10259770, 20519540]

約数ペア:

[(1, 20519540), (2, 10259770), (4, 5129885), (5, 4103908), (10, 2051954), (20, 1025977), (421, 48740), (842, 24370), (1684, 12185), (2105, 9748), (2437, 8420), (4210, 4874)]