20689443

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{787}}^1$

素因数の和:943

約数の個数: 24

約数和(自身を含む): 31469568

約数和(自身を除く): 10780125

約数列:

[1, 3, 9, 23, 69, 127, 207, 381, 787, 1143, 2361, 2921, 7083, 8763, 18101, 26289, 54303, 99949, 162909, 299847, 899541, 2298827, 6896481, 20689443]

約数ペア:

[(1, 20689443), (3, 6896481), (9, 2298827), (23, 899541), (69, 299847), (127, 162909), (207, 99949), (381, 54303), (787, 26289), (1143, 18101), (2361, 8763), (2921, 7083)]