20802321

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{509}}^1$

素因数の和:773

約数の個数: 24

約数和(自身を含む): 31824000

約数和(自身を除く): 11021679

約数列:

[1, 3, 9, 19, 57, 171, 239, 509, 717, 1527, 2151, 4541, 4581, 9671, 13623, 29013, 40869, 87039, 121651, 364953, 1094859, 2311369, 6934107, 20802321]

約数ペア:

[(1, 20802321), (3, 6934107), (9, 2311369), (19, 1094859), (57, 364953), (171, 121651), (239, 87039), (509, 40869), (717, 29013), (1527, 13623), (2151, 9671), (4541, 4581)]