21027249

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{751}}^1$

素因数の和:838

約数の個数: 32

約数和(自身を含む): 33569280

約数和(自身を除く): 12542031

約数列:

[1, 3, 9, 17, 27, 51, 61, 153, 183, 459, 549, 751, 1037, 1647, 2253, 3111, 6759, 9333, 12767, 20277, 27999, 38301, 45811, 114903, 137433, 344709, 412299, 778787, 1236897, 2336361, 7009083, 21027249]

約数ペア:

[(1, 21027249), (3, 7009083), (9, 2336361), (17, 1236897), (27, 778787), (51, 412299), (61, 344709), (153, 137433), (183, 114903), (459, 45811), (549, 38301), (751, 27999), (1037, 20277), (1647, 12767), (2253, 9333), (3111, 6759)]