19983891

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{2819}}^1$

素因数の和:2978

約数の個数: 16

約数和(自身を含む): 28425600

約数和(自身を除く): 8441709

約数列:

[1, 3, 17, 51, 139, 417, 2363, 2819, 7089, 8457, 47923, 143769, 391841, 1175523, 6661297, 19983891]

約数ペア:

[(1, 19983891), (3, 6661297), (17, 1175523), (51, 391841), (139, 143769), (417, 47923), (2363, 8457), (2819, 7089)]