81835640

素因数分解:

$2^3\times 5^1\times {\mathrm{2045891}}^1$

素因数の和:2045902

約数の個数: 16

約数和(自身を含む): 184130280

約数和(自身を除く): 102294640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2045891, 4091782, 8183564, 10229455, 16367128, 20458910, 40917820, 81835640]

約数ペア:

[(1, 81835640), (2, 40917820), (4, 20458910), (5, 16367128), (8, 10229455), (10, 8183564), (20, 4091782), (40, 2045891)]