21573459

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{15667}}^1$

素因数の和:15696

約数の個数: 20

約数和(自身を含む): 34124904

約数和(自身を除く): 12551445

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 15667, 47001, 141003, 266339, 423009, 799017, 1269027, 2397051, 7191153, 21573459]

約数ペア:

[(1, 21573459), (3, 7191153), (9, 2397051), (17, 1269027), (27, 799017), (51, 423009), (81, 266339), (153, 141003), (459, 47001), (1377, 15667)]