19983663

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{8573}}^1$

素因数の和:8623

約数の個数: 24

約数和(自身を含む): 33884448

約数和(自身を除く): 13900785

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 333, 777, 2331, 8573, 25719, 60011, 77157, 180033, 317201, 540099, 951603, 2220407, 2854809, 6661221, 19983663]

約数ペア:

[(1, 19983663), (3, 6661221), (7, 2854809), (9, 2220407), (21, 951603), (37, 540099), (63, 317201), (111, 180033), (259, 77157), (333, 60011), (777, 25719), (2331, 8573)]