20497743

素因数分解:

$3^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{4457}}^1$

素因数の和:4543

約数の個数: 24

約数和(自身を含む): 34308768

約数和(自身を除く): 13811025

約数列:

[1, 3, 7, 9, 21, 63, 73, 219, 511, 657, 1533, 4457, 4599, 13371, 31199, 40113, 93597, 280791, 325361, 976083, 2277527, 2928249, 6832581, 20497743]

約数ペア:

[(1, 20497743), (3, 6832581), (7, 2928249), (9, 2277527), (21, 976083), (63, 325361), (73, 280791), (219, 93597), (511, 40113), (657, 31199), (1533, 13371), (4457, 4599)]