20998728

素因数分解:

$2^3\times 3^2\times {\mathrm{291649}}^1$

素因数の和:291661

約数の個数: 24

約数和(自身を含む): 56871750

約数和(自身を除く): 35873022

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 291649, 583298, 874947, 1166596, 1749894, 2333192, 2624841, 3499788, 5249682, 6999576, 10499364, 20998728]

約数ペア:

[(1, 20998728), (2, 10499364), (3, 6999576), (4, 5249682), (6, 3499788), (8, 2624841), (9, 2333192), (12, 1749894), (18, 1166596), (24, 874947), (36, 583298), (72, 291649)]