20899180

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{45433}}^1$

素因数の和:45465

約数の個数: 24

約数和(自身を含む): 45797472

約数和(自身を除く): 24898292

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 45433, 90866, 181732, 227165, 454330, 908660, 1044959, 2089918, 4179836, 5224795, 10449590, 20899180]

約数ペア:

[(1, 20899180), (2, 10449590), (4, 5224795), (5, 4179836), (10, 2089918), (20, 1044959), (23, 908660), (46, 454330), (92, 227165), (115, 181732), (230, 90866), (460, 45433)]