21724317

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{1327}}^1$

素因数の和:1457

約数の個数: 24

約数和(自身を含む): 33561216

約数和(自身を除く): 11836899

約数列:

[1, 3, 9, 17, 51, 107, 153, 321, 963, 1327, 1819, 3981, 5457, 11943, 16371, 22559, 67677, 141989, 203031, 425967, 1277901, 2413813, 7241439, 21724317]

約数ペア:

[(1, 21724317), (3, 7241439), (9, 2413813), (17, 1277901), (51, 425967), (107, 203031), (153, 141989), (321, 67677), (963, 22559), (1327, 16371), (1819, 11943), (3981, 5457)]