21286504

素因数分解:

$2^3\times {\mathrm{313}}^1\times {\mathrm{8501}}^1$

素因数の和:8820

約数の個数: 16

約数和(自身を含む): 40044420

約数和(自身を除く): 18757916

約数列:

[1, 2, 4, 8, 313, 626, 1252, 2504, 8501, 17002, 34004, 68008, 2660813, 5321626, 10643252, 21286504]

約数ペア:

[(1, 21286504), (2, 10643252), (4, 5321626), (8, 2660813), (313, 68008), (626, 34004), (1252, 17002), (2504, 8501)]