21815001

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{20717}}^1$

素因数の和:20742

約数の個数: 20

約数和(自身を含む): 35096292

約数和(自身を除く): 13281291

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 20717, 62151, 186453, 269321, 559359, 807963, 1678077, 2423889, 7271667, 21815001]

約数ペア:

[(1, 21815001), (3, 7271667), (9, 2423889), (13, 1678077), (27, 807963), (39, 559359), (81, 269321), (117, 186453), (351, 62151), (1053, 20717)]