20408031

素因数分解:

$3^4\times 7^1\times {\mathrm{35993}}^1$

素因数の和:36012

約数の個数: 20

約数和(自身を含む): 34842192

約数和(自身を除く): 14434161

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 35993, 107979, 251951, 323937, 755853, 971811, 2267559, 2915433, 6802677, 20408031]

約数ペア:

[(1, 20408031), (3, 6802677), (7, 2915433), (9, 2267559), (21, 971811), (27, 755853), (63, 323937), (81, 251951), (189, 107979), (567, 35993)]