28237419

素因数分解:

$3^2\times 7^1\times {\mathrm{397}}^1\times {\mathrm{1129}}^1$

素因数の和:1539

約数の個数: 24

約数和(自身を含む): 46772960

約数和(自身を除く): 18535541

約数列:

[1, 3, 7, 9, 21, 63, 397, 1129, 1191, 2779, 3387, 3573, 7903, 8337, 10161, 23709, 25011, 71127, 448213, 1344639, 3137491, 4033917, 9412473, 28237419]

約数ペア:

[(1, 28237419), (3, 9412473), (7, 4033917), (9, 3137491), (21, 1344639), (63, 448213), (397, 71127), (1129, 25011), (1191, 23709), (2779, 10161), (3387, 8337), (3573, 7903)]