21778410

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{643}}^1\times {\mathrm{1129}}^1$

素因数の和:1782

約数の個数: 32

約数和(自身を含む): 52395840

約数和(自身を除く): 30617430

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 643, 1129, 1286, 1929, 2258, 3215, 3387, 3858, 5645, 6430, 6774, 9645, 11290, 16935, 19290, 33870, 725947, 1451894, 2177841, 3629735, 4355682, 7259470, 10889205, 21778410]

約数ペア:

[(1, 21778410), (2, 10889205), (3, 7259470), (5, 4355682), (6, 3629735), (10, 2177841), (15, 1451894), (30, 725947), (643, 33870), (1129, 19290), (1286, 16935), (1929, 11290), (2258, 9645), (3215, 6774), (3387, 6430), (3858, 5645)]