161751280

素因数分解:

$2^4\times 5^1\times {\mathrm{2021891}}^1$

素因数の和:2021904

約数の個数: 20

約数和(自身を含む): 376071912

約数和(自身を除く): 214320632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2021891, 4043782, 8087564, 10109455, 16175128, 20218910, 32350256, 40437820, 80875640, 161751280]

約数ペア:

[(1, 161751280), (2, 80875640), (4, 40437820), (5, 32350256), (8, 20218910), (10, 16175128), (16, 10109455), (20, 8087564), (40, 4043782), (80, 2021891)]