20786563

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{4721}}^1$

素因数の和:4782

約数の個数: 16

約数和(自身を含む): 25838784

約数和(自身を除く): 5052221

約数列:

[1, 7, 17, 37, 119, 259, 629, 4403, 4721, 33047, 80257, 174677, 561799, 1222739, 2969509, 20786563]

約数ペア:

[(1, 20786563), (7, 2969509), (17, 1222739), (37, 561799), (119, 174677), (259, 80257), (629, 33047), (4403, 4721)]