20390788

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{20149}}^1$

素因数の和:20187

約数の個数: 24

約数和(自身を含む): 40622400

約数和(自身を除く): 20231612

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 92, 253, 506, 1012, 20149, 40298, 80596, 221639, 443278, 463427, 886556, 926854, 1853708, 5097697, 10195394, 20390788]

約数ペア:

[(1, 20390788), (2, 10195394), (4, 5097697), (11, 1853708), (22, 926854), (23, 886556), (44, 463427), (46, 443278), (92, 221639), (253, 80596), (506, 40298), (1012, 20149)]