20905737

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{1609}}^1$

素因数の和:1744

約数の個数: 16

約数和(自身を含む): 28748160

約数和(自身を除く): 7842423

約数列:

[1, 3, 61, 71, 183, 213, 1609, 4331, 4827, 12993, 98149, 114239, 294447, 342717, 6968579, 20905737]

約数ペア:

[(1, 20905737), (3, 6968579), (61, 342717), (71, 294447), (183, 114239), (213, 98149), (1609, 12993), (4331, 4827)]