20666836

素因数分解:

$2^2\times {\mathrm{107}}^1\times {\mathrm{109}}^1\times {\mathrm{443}}^1$

素因数の和:663

約数の個数: 24

約数和(自身を含む): 36923040

約数和(自身を除く): 16256204

約数列:

[1, 2, 4, 107, 109, 214, 218, 428, 436, 443, 886, 1772, 11663, 23326, 46652, 47401, 48287, 94802, 96574, 189604, 193148, 5166709, 10333418, 20666836]

約数ペア:

[(1, 20666836), (2, 10333418), (4, 5166709), (107, 193148), (109, 189604), (214, 96574), (218, 94802), (428, 48287), (436, 47401), (443, 46652), (886, 23326), (1772, 11663)]