20802411

素因数分解:

$3^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{1097}}^1$

素因数の和:1160

約数の個数: 36

約数和(自身を含む): 35799192

約数和(自身を除く): 14996781

約数列:

[1, 3, 7, 9, 21, 43, 49, 63, 129, 147, 301, 387, 441, 903, 1097, 2107, 2709, 3291, 6321, 7679, 9873, 18963, 23037, 47171, 53753, 69111, 141513, 161259, 330197, 424539, 483777, 990591, 2311379, 2971773, 6934137, 20802411]

約数ペア:

[(1, 20802411), (3, 6934137), (7, 2971773), (9, 2311379), (21, 990591), (43, 483777), (49, 424539), (63, 330197), (129, 161259), (147, 141513), (301, 69111), (387, 53753), (441, 47171), (903, 23037), (1097, 18963), (2107, 9873), (2709, 7679), (3291, 6321)]