21157782

素因数分解:

$2^1\times 3^1\times {\mathrm{257}}^1\times {\mathrm{13721}}^1$

素因数の和:13983

約数の個数: 16

約数和(自身を含む): 42483312

約数和(自身を除く): 21325530

約数列:

[1, 2, 3, 6, 257, 514, 771, 1542, 13721, 27442, 41163, 82326, 3526297, 7052594, 10578891, 21157782]

約数ペア:

[(1, 21157782), (2, 10578891), (3, 7052594), (6, 3526297), (257, 82326), (514, 41163), (771, 27442), (1542, 13721)]