20747948

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{2089}}^1$

素因数の和:2297

約数の個数: 24

約数和(自身を含む): 39325440

約数和(自身を除く): 18577492

約数列:

[1, 2, 4, 13, 26, 52, 191, 382, 764, 2089, 2483, 4178, 4966, 8356, 9932, 27157, 54314, 108628, 398999, 797998, 1595996, 5186987, 10373974, 20747948]

約数ペア:

[(1, 20747948), (2, 10373974), (4, 5186987), (13, 1595996), (26, 797998), (52, 398999), (191, 108628), (382, 54314), (764, 27157), (2089, 9932), (2483, 8356), (4178, 4966)]