20805543356

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{30777431}}^1$

素因数の和:30777461

約数の個数: 18

約数和(自身を含む): 39425890392

約数和(自身を除く): 18620347036

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 30777431, 61554862, 123109724, 400106603, 800213206, 1600426412, 5201385839, 10402771678, 20805543356]

約数ペア:

[(1, 20805543356), (2, 10402771678), (4, 5201385839), (13, 1600426412), (26, 800213206), (52, 400106603), (169, 123109724), (338, 61554862), (676, 30777431)]