20819945

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{919}}^1$

素因数の和:1144

約数の個数: 16

約数和(自身を含む): 26231040

約数和(自身を除く): 5411095

約数列:

[1, 5, 23, 115, 197, 919, 985, 4531, 4595, 21137, 22655, 105685, 181043, 905215, 4163989, 20819945]

約数ペア:

[(1, 20819945), (5, 4163989), (23, 905215), (115, 181043), (197, 105685), (919, 22655), (985, 21137), (4531, 4595)]