28808217

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{20921}}^1$

素因数の和:20950

約数の個数: 20

約数和(自身を含む): 45568116

約数和(自身を除く): 16759899

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 20921, 62763, 188289, 355657, 564867, 1066971, 1694601, 3200913, 9602739, 28808217]

約数ペア:

[(1, 28808217), (3, 9602739), (9, 3200913), (17, 1694601), (27, 1066971), (51, 564867), (81, 355657), (153, 188289), (459, 62763), (1377, 20921)]