21876789

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{643}}^1\times {\mathrm{1031}}^1$

素因数の和:1688

約数の個数: 16

約数和(自身を含む): 31901184

約数和(自身を除く): 10024395

約数列:

[1, 3, 11, 33, 643, 1031, 1929, 3093, 7073, 11341, 21219, 34023, 662933, 1988799, 7292263, 21876789]

約数ペア:

[(1, 21876789), (3, 7292263), (11, 1988799), (33, 662933), (643, 34023), (1031, 21219), (1929, 11341), (3093, 7073)]