20728124

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{1303}}^1$

素因数の和:1445

約数の個数: 24

約数和(自身を含む): 37570848

約数和(自身を除く): 16842724

約数列:

[1, 2, 4, 41, 82, 97, 164, 194, 388, 1303, 2606, 3977, 5212, 7954, 15908, 53423, 106846, 126391, 213692, 252782, 505564, 5182031, 10364062, 20728124]

約数ペア:

[(1, 20728124), (2, 10364062), (4, 5182031), (41, 505564), (82, 252782), (97, 213692), (164, 126391), (194, 106846), (388, 53423), (1303, 15908), (2606, 7954), (3977, 5212)]