21806727

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{2767}}^1$

素因数の和:2878

約数の個数: 16

約数和(自身を含む): 30292992

約数和(自身を除く): 8486265

約数列:

[1, 3, 37, 71, 111, 213, 2627, 2767, 7881, 8301, 102379, 196457, 307137, 589371, 7268909, 21806727]

約数ペア:

[(1, 21806727), (3, 7268909), (37, 589371), (71, 307137), (111, 196457), (213, 102379), (2627, 8301), (2767, 7881)]