20790787628

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{30755603}}^1$

素因数の和:30755633

約数の個数: 18

約数和(自身を含む): 39397928724

約数和(自身を除く): 18607141096

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 30755603, 61511206, 123022412, 399822839, 799645678, 1599291356, 5197696907, 10395393814, 20790787628]

約数ペア:

[(1, 20790787628), (2, 10395393814), (4, 5197696907), (13, 1599291356), (26, 799645678), (52, 399822839), (169, 123022412), (338, 61511206), (676, 30755603)]