7811420

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{5501}}^1$

素因数の和:5581

約数の個数: 24

約数和(自身を含む): 16638048

約数和(自身を除く): 8826628

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 5501, 11002, 22004, 27505, 55010, 110020, 390571, 781142, 1562284, 1952855, 3905710, 7811420]

約数ペア:

[(1, 7811420), (2, 3905710), (4, 1952855), (5, 1562284), (10, 781142), (20, 390571), (71, 110020), (142, 55010), (284, 27505), (355, 22004), (710, 11002), (1420, 5501)]