12820563

素因数分解:

$3^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1033}}^1$

素因数の和:1243

約数の個数: 24

約数和(自身を含む): 21292128

約数和(自身を除く): 8471565

約数列:

[1, 3, 7, 9, 21, 63, 197, 591, 1033, 1379, 1773, 3099, 4137, 7231, 9297, 12411, 21693, 65079, 203501, 610503, 1424507, 1831509, 4273521, 12820563]

約数ペア:

[(1, 12820563), (3, 4273521), (7, 1831509), (9, 1424507), (21, 610503), (63, 203501), (197, 65079), (591, 21693), (1033, 12411), (1379, 9297), (1773, 7231), (3099, 4137)]