28709073

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{20849}}^1$

素因数の和:20878

約数の個数: 20

約数和(自身を含む): 45411300

約数和(自身を除く): 16702227

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 20849, 62547, 187641, 354433, 562923, 1063299, 1688769, 3189897, 9569691, 28709073]

約数ペア:

[(1, 28709073), (3, 9569691), (9, 3189897), (17, 1688769), (27, 1063299), (51, 562923), (81, 354433), (153, 187641), (459, 62547), (1377, 20849)]