21440043

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{8243}}^1$

素因数の和:8283

約数の個数: 18

約数和(自身を含む): 32901804

約数和(自身を除く): 11461761

約数列:

[1, 3, 9, 17, 51, 153, 289, 867, 2601, 8243, 24729, 74187, 140131, 420393, 1261179, 2382227, 7146681, 21440043]

約数ペア:

[(1, 21440043), (3, 7146681), (9, 2382227), (17, 1261179), (51, 420393), (153, 140131), (289, 74187), (867, 24729), (2601, 8243)]