12720280

素因数分解:

$2^3\times 5^1\times {\mathrm{318007}}^1$

素因数の和:318018

約数の個数: 16

約数和(自身を含む): 28620720

約数和(自身を除く): 15900440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 318007, 636014, 1272028, 1590035, 2544056, 3180070, 6360140, 12720280]

約数ペア:

[(1, 12720280), (2, 6360140), (4, 3180070), (5, 2544056), (8, 1590035), (10, 1272028), (20, 636014), (40, 318007)]