19886120

素因数分解:

$2^3\times 5^1\times {\mathrm{497153}}^1$

素因数の和:497164

約数の個数: 16

約数和(自身を含む): 44743860

約数和(自身を除く): 24857740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 497153, 994306, 1988612, 2485765, 3977224, 4971530, 9943060, 19886120]

約数ペア:

[(1, 19886120), (2, 9943060), (4, 4971530), (5, 3977224), (8, 2485765), (10, 1988612), (20, 994306), (40, 497153)]