21431286

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{27689}}^1$

素因数の和:27740

約数の個数: 24

約数和(自身を含む): 47516040

約数和(自身を除く): 26084754

約数列:

[1, 2, 3, 6, 9, 18, 43, 86, 129, 258, 387, 774, 27689, 55378, 83067, 166134, 249201, 498402, 1190627, 2381254, 3571881, 7143762, 10715643, 21431286]

約数ペア:

[(1, 21431286), (2, 10715643), (3, 7143762), (6, 3571881), (9, 2381254), (18, 1190627), (43, 498402), (86, 249201), (129, 166134), (258, 83067), (387, 55378), (774, 27689)]