20512149

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{57457}}^1$

素因数の和:57484

約数の個数: 16

約数和(自身を含む): 33095808

約数和(自身を除く): 12583659

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 57457, 172371, 402199, 976769, 1206597, 2930307, 6837383, 20512149]

約数ペア:

[(1, 20512149), (3, 6837383), (7, 2930307), (17, 1206597), (21, 976769), (51, 402199), (119, 172371), (357, 57457)]