21748391

素因数分解:

$7^1\times {\mathrm{31}}^2\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:183

約数の個数: 24

約数和(自身を含む): 26596512

約数和(自身を除く): 4848121

約数列:

[1, 7, 31, 53, 61, 217, 371, 427, 961, 1643, 1891, 3233, 6727, 11501, 13237, 22631, 50933, 58621, 100223, 356531, 410347, 701561, 3106913, 21748391]

約数ペア:

[(1, 21748391), (7, 3106913), (31, 701561), (53, 410347), (61, 356531), (217, 100223), (371, 58621), (427, 50933), (961, 22631), (1643, 13237), (1891, 11501), (3233, 6727)]