211156911

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{47207}}^1$

素因数の和:47291

約数の個数: 24

約数和(自身を含む): 353493504

約数和(自身を除く): 142336593

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 47207, 141621, 330449, 424863, 991347, 2974041, 3351697, 10055091, 23461879, 30165273, 70385637, 211156911]

約数ペア:

[(1, 211156911), (3, 70385637), (7, 30165273), (9, 23461879), (21, 10055091), (63, 3351697), (71, 2974041), (213, 991347), (497, 424863), (639, 330449), (1491, 141621), (4473, 47207)]