21431889

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{241}}^2$

素因数の和:529

約数の個数: 18

約数和(自身を含む): 31844358

約数和(自身を除く): 10412469

約数列:

[1, 3, 9, 41, 123, 241, 369, 723, 2169, 9881, 29643, 58081, 88929, 174243, 522729, 2381321, 7143963, 21431889]

約数ペア:

[(1, 21431889), (3, 7143963), (9, 2381321), (41, 522729), (123, 174243), (241, 88929), (369, 58081), (723, 29643), (2169, 9881)]