408022540

素因数分解:

$2^2\times 5^1\times {\mathrm{20401127}}^1$

素因数の和:20401136

約数の個数: 12

約数和(自身を含む): 856847376

約数和(自身を除く): 448824836

約数列:

[1, 2, 4, 5, 10, 20, 20401127, 40802254, 81604508, 102005635, 204011270, 408022540]

約数ペア:

[(1, 408022540), (2, 204011270), (4, 102005635), (5, 81604508), (10, 40802254), (20, 20401127)]