19989108

素因数分解:

$2^2\times 3^2\times {\mathrm{555253}}^1$

素因数の和:555263

約数の個数: 18

約数和(自身を含む): 50528114

約数和(自身を除く): 30539006

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 555253, 1110506, 1665759, 2221012, 3331518, 4997277, 6663036, 9994554, 19989108]

約数ペア:

[(1, 19989108), (2, 9994554), (3, 6663036), (4, 4997277), (6, 3331518), (9, 2221012), (12, 1665759), (18, 1110506), (36, 555253)]