21016938123

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{1103}}^1\times {\mathrm{29819}}^1$

素因数の和:30999

約数の個数: 24

約数和(自身を含む): 30814318080

約数和(自身を除く): 9797379957

約数列:

[1, 3, 9, 71, 213, 639, 1103, 3309, 9927, 29819, 78313, 89457, 234939, 268371, 704817, 2117149, 6351447, 19054341, 32890357, 98671071, 296013213, 2335215347, 7005646041, 21016938123]

約数ペア:

[(1, 21016938123), (3, 7005646041), (9, 2335215347), (71, 296013213), (213, 98671071), (639, 32890357), (1103, 19054341), (3309, 6351447), (9927, 2117149), (29819, 704817), (78313, 268371), (89457, 234939)]