408057220

素因数分解:

$2^2\times 5^1\times {\mathrm{20402861}}^1$

素因数の和:20402870

約数の個数: 12

約数和(自身を含む): 856920204

約数和(自身を除く): 448862984

約数列:

[1, 2, 4, 5, 10, 20, 20402861, 40805722, 81611444, 102014305, 204028610, 408057220]

約数ペア:

[(1, 408057220), (2, 204028610), (4, 102014305), (5, 81611444), (10, 40805722), (20, 20402861)]