251667

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{239}}^1$

素因数の和:264

約数の個数: 20

約数和(自身を含む): 406560

約数和(自身を除く): 154893

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 239, 351, 717, 1053, 2151, 3107, 6453, 9321, 19359, 27963, 83889, 251667]

約数ペア:

[(1, 251667), (3, 83889), (9, 27963), (13, 19359), (27, 9321), (39, 6453), (81, 3107), (117, 2151), (239, 1053), (351, 717)]