21306678

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{208889}}^1$

素因数の和:208911

約数の個数: 16

約数和(自身を含む): 45120240

約数和(自身を除く): 23813562

約数列:

[1, 2, 3, 6, 17, 34, 51, 102, 208889, 417778, 626667, 1253334, 3551113, 7102226, 10653339, 21306678]

約数ペア:

[(1, 21306678), (2, 10653339), (3, 7102226), (6, 3551113), (17, 1253334), (34, 626667), (51, 417778), (102, 208889)]