21007349

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1931}}^1$

素因数の和:2008

約数の個数: 16

約数和(自身を含む): 24482304

約数和(自身を除く): 3474955

約数列:

[1, 11, 23, 43, 253, 473, 989, 1931, 10879, 21241, 44413, 83033, 488543, 913363, 1909759, 21007349]

約数ペア:

[(1, 21007349), (11, 1909759), (23, 913363), (43, 488543), (253, 83033), (473, 44413), (989, 21241), (1931, 10879)]