20217206

素因数分解:

$2^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1\times {\mathrm{643}}^1$

素因数の和:923

約数の個数: 16

約数和(自身を含む): 30912000

約数和(自身を除く): 10694794

約数列:

[1, 2, 79, 158, 199, 398, 643, 1286, 15721, 31442, 50797, 101594, 127957, 255914, 10108603, 20217206]

約数ペア:

[(1, 20217206), (2, 10108603), (79, 255914), (158, 127957), (199, 101594), (398, 50797), (643, 31442), (1286, 15721)]