19917843

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{8501}}^1$

素因数の和:8586

約数の個数: 16

約数和(自身を含む): 29382912

約数和(自身を除く): 9465069

約数列:

[1, 3, 11, 33, 71, 213, 781, 2343, 8501, 25503, 93511, 280533, 603571, 1810713, 6639281, 19917843]

約数ペア:

[(1, 19917843), (3, 6639281), (11, 1810713), (33, 603571), (71, 280533), (213, 93511), (781, 25503), (2343, 8501)]