19860891

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{3943}}^1$

素因数の和:4042

約数の個数: 16

約数和(自身を含む): 28018176

約数和(自身を除く): 8157285

約数列:

[1, 3, 23, 69, 73, 219, 1679, 3943, 5037, 11829, 90689, 272067, 287839, 863517, 6620297, 19860891]

約数ペア:

[(1, 19860891), (3, 6620297), (23, 863517), (69, 287839), (73, 272067), (219, 90689), (1679, 11829), (3943, 5037)]