405280994380

素因数分解:

$2^2\times 5^1\times {\mathrm{20264049719}}^1$

素因数の和:20264049728

約数の個数: 12

約数和(自身を含む): 851090088240

約数和(自身を除く): 445809093860

約数列:

[1, 2, 4, 5, 10, 20, 20264049719, 40528099438, 81056198876, 101320248595, 202640497190, 405280994380]

約数ペア:

[(1, 405280994380), (2, 202640497190), (4, 101320248595), (5, 81056198876), (10, 40528099438), (20, 20264049719)]