20998774

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{563}}^1\times {\mathrm{1097}}^1$

素因数の和:1679

約数の個数: 16

約数和(自身を含む): 33440688

約数和(自身を除く): 12441914

約数列:

[1, 2, 17, 34, 563, 1097, 1126, 2194, 9571, 18649, 19142, 37298, 617611, 1235222, 10499387, 20998774]

約数ペア:

[(1, 20998774), (2, 10499387), (17, 1235222), (34, 617611), (563, 37298), (1097, 19142), (1126, 18649), (2194, 9571)]