668868669

素因数分解:

$3^2\times 7^2\times {\mathrm{1516709}}^1$

素因数の和:1516729

約数の個数: 18

約数和(自身を含む): 1123882110

約数和(自身を除く): 455013441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 1516709, 4550127, 10616963, 13650381, 31850889, 74318741, 95552667, 222956223, 668868669]

約数ペア:

[(1, 668868669), (3, 222956223), (7, 95552667), (9, 74318741), (21, 31850889), (49, 13650381), (63, 10616963), (147, 4550127), (441, 1516709)]