21540535

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{2371}}^1$

素因数の和:2478

約数の個数: 16

約数和(自身を含む): 27325440

約数和(自身を除く): 5784905

約数列:

[1, 5, 23, 79, 115, 395, 1817, 2371, 9085, 11855, 54533, 187309, 272665, 936545, 4308107, 21540535]

約数ペア:

[(1, 21540535), (5, 4308107), (23, 936545), (79, 272665), (115, 187309), (395, 54533), (1817, 11855), (2371, 9085)]