20899137

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{8363}}^1$

素因数の和:8397

約数の個数: 24

約数和(自身を含む): 34325856

約数和(自身を除く): 13426719

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 2499, 8363, 25089, 58541, 142171, 175623, 409787, 426513, 995197, 1229361, 2985591, 6966379, 20899137]

約数ペア:

[(1, 20899137), (3, 6966379), (7, 2985591), (17, 1229361), (21, 995197), (49, 426513), (51, 409787), (119, 175623), (147, 142171), (357, 58541), (833, 25089), (2499, 8363)]