21083769

素因数分解:

$3^2\times 7^2\times {\mathrm{47809}}^1$

素因数の和:47829

約数の個数: 18

約数和(自身を含む): 35427210

約数和(自身を除く): 14343441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 47809, 143427, 334663, 430281, 1003989, 2342641, 3011967, 7027923, 21083769]

約数ペア:

[(1, 21083769), (3, 7027923), (7, 3011967), (9, 2342641), (21, 1003989), (49, 430281), (63, 334663), (147, 143427), (441, 47809)]