398889

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1$

素因数の和:117

約数の個数: 24

約数和(自身を含む): 628992

約数和(自身を除く): 230103

約数列:

[1, 3, 9, 23, 41, 47, 69, 123, 141, 207, 369, 423, 943, 1081, 1927, 2829, 3243, 5781, 8487, 9729, 17343, 44321, 132963, 398889]

約数ペア:

[(1, 398889), (3, 132963), (9, 44321), (23, 17343), (41, 9729), (47, 8487), (69, 5781), (123, 3243), (141, 2829), (207, 1927), (369, 1081), (423, 943)]