20259921

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{8647}}^1$

素因数の和:8732

約数の個数: 16

約数和(自身を含む): 29887488

約数和(自身を除く): 9627567

約数列:

[1, 3, 11, 33, 71, 213, 781, 2343, 8647, 25941, 95117, 285351, 613937, 1841811, 6753307, 20259921]

約数ペア:

[(1, 20259921), (3, 6753307), (11, 1841811), (33, 613937), (71, 285351), (213, 95117), (781, 25941), (2343, 8647)]