28243287

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{2903}}^1$

素因数の和:2979

約数の個数: 24

約数和(自身を含む): 43490304

約数和(自身を除く): 15247017

約数列:

[1, 3, 9, 23, 47, 69, 141, 207, 423, 1081, 2903, 3243, 8709, 9729, 26127, 66769, 136441, 200307, 409323, 600921, 1227969, 3138143, 9414429, 28243287]

約数ペア:

[(1, 28243287), (3, 9414429), (9, 3138143), (23, 1227969), (47, 600921), (69, 409323), (141, 200307), (207, 136441), (423, 66769), (1081, 26127), (2903, 9729), (3243, 8709)]