21431373

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{1301}}^1$

素因数の和:1357

約数の個数: 24

約数和(自身を含む): 31977120

約数和(自身を除く): 10545747

約数列:

[1, 3, 17, 19, 51, 57, 289, 323, 867, 969, 1301, 3903, 5491, 16473, 22117, 24719, 66351, 74157, 375989, 420223, 1127967, 1260669, 7143791, 21431373]

約数ペア:

[(1, 21431373), (3, 7143791), (17, 1260669), (19, 1127967), (51, 420223), (57, 375989), (289, 74157), (323, 66351), (867, 24719), (969, 22117), (1301, 16473), (3903, 5491)]