21298618

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{3767}}^1$

素因数の和:4037

約数の個数: 16

約数和(自身を含む): 34997184

約数和(自身を除く): 13698566

約数列:

[1, 2, 11, 22, 257, 514, 2827, 3767, 5654, 7534, 41437, 82874, 968119, 1936238, 10649309, 21298618]

約数ペア:

[(1, 21298618), (2, 10649309), (11, 1936238), (22, 968119), (257, 82874), (514, 41437), (2827, 7534), (3767, 5654)]