18605205

素因数分解:

$3^2\times 5^1\times {\mathrm{643}}^2$

素因数の和:1297

約数の個数: 18

約数和(自身を含む): 32299254

約数和(自身を除く): 13694049

約数列:

[1, 3, 5, 9, 15, 45, 643, 1929, 3215, 5787, 9645, 28935, 413449, 1240347, 2067245, 3721041, 6201735, 18605205]

約数ペア:

[(1, 18605205), (3, 6201735), (5, 3721041), (9, 2067245), (15, 1240347), (45, 413449), (643, 28935), (1929, 9645), (3215, 5787)]