81560164

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{67741}}^1$

素因数の和:67795

約数の個数: 24

約数和(自身を含む): 166916288

約数和(自身を除く): 85356124

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 1204, 67741, 135482, 270964, 474187, 948374, 1896748, 2912863, 5825726, 11651452, 20390041, 40780082, 81560164]

約数ペア:

[(1, 81560164), (2, 40780082), (4, 20390041), (7, 11651452), (14, 5825726), (28, 2912863), (43, 1896748), (86, 948374), (172, 474187), (301, 270964), (602, 135482), (1204, 67741)]