25561221

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{28307}}^1$

素因数の和:28360

約数の個数: 16

約数和(自身を含む): 39857664

約数和(自身を除く): 14296443

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 28307, 84921, 198149, 594447, 1217201, 3651603, 8520407, 25561221]

約数ペア:

[(1, 25561221), (3, 8520407), (7, 3651603), (21, 1217201), (43, 594447), (129, 198149), (301, 84921), (903, 28307)]