21000409012

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{499}}^1\times {\mathrm{956477}}^1$

素因数の和:956991

約数の個数: 24

約数和(自身を含む): 40172076000

約数和(自身を除く): 19171666988

約数列:

[1, 2, 4, 11, 22, 44, 499, 998, 1996, 5489, 10978, 21956, 956477, 1912954, 3825908, 10521247, 21042494, 42084988, 477282023, 954564046, 1909128092, 5250102253, 10500204506, 21000409012]

約数ペア:

[(1, 21000409012), (2, 10500204506), (4, 5250102253), (11, 1909128092), (22, 954564046), (44, 477282023), (499, 42084988), (998, 21042494), (1996, 10521247), (5489, 3825908), (10978, 1912954), (21956, 956477)]