21879639

素因数分解:

$3^4\times {\mathrm{313}}^1\times {\mathrm{863}}^1$

素因数の和:1188

約数の個数: 20

約数和(自身を含む): 32826816

約数和(自身を除く): 10947177

約数列:

[1, 3, 9, 27, 81, 313, 863, 939, 2589, 2817, 7767, 8451, 23301, 25353, 69903, 270119, 810357, 2431071, 7293213, 21879639]

約数ペア:

[(1, 21879639), (3, 7293213), (9, 2431071), (27, 810357), (81, 270119), (313, 69903), (863, 25353), (939, 23301), (2589, 8451), (2817, 7767)]