12688580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{33391}}^1$

素因数の和:33419

約数の個数: 24

約数和(自身を含む): 28049280

約数和(自身を除く): 15360700

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 33391, 66782, 133564, 166955, 333910, 634429, 667820, 1268858, 2537716, 3172145, 6344290, 12688580]

約数ペア:

[(1, 12688580), (2, 6344290), (4, 3172145), (5, 2537716), (10, 1268858), (19, 667820), (20, 634429), (38, 333910), (76, 166955), (95, 133564), (190, 66782), (380, 33391)]