21333123

素因数分解:

$3^2\times 7^1\times {\mathrm{307}}^1\times {\mathrm{1103}}^1$

素因数の和:1423

約数の個数: 24

約数和(自身を含む): 35363328

約数和(自身を除く): 14030205

約数列:

[1, 3, 7, 9, 21, 63, 307, 921, 1103, 2149, 2763, 3309, 6447, 7721, 9927, 19341, 23163, 69489, 338621, 1015863, 2370347, 3047589, 7111041, 21333123]

約数ペア:

[(1, 21333123), (3, 7111041), (7, 3047589), (9, 2370347), (21, 1015863), (63, 338621), (307, 69489), (921, 23163), (1103, 19341), (2149, 9927), (2763, 7721), (3309, 6447)]