20771443

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{433}}^1$

素因数の和:547

約数の個数: 24

約数和(自身を含む): 26717040

約数和(自身を除く): 5945597

約数列:

[1, 7, 11, 49, 77, 89, 433, 539, 623, 979, 3031, 4361, 4763, 6853, 21217, 33341, 38537, 47971, 233387, 269759, 423907, 1888313, 2967349, 20771443]

約数ペア:

[(1, 20771443), (7, 2967349), (11, 1888313), (49, 423907), (77, 269759), (89, 233387), (433, 47971), (539, 38537), (623, 33341), (979, 21217), (3031, 6853), (4361, 4763)]