20807780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{148627}}^1$

素因数の和:148643

約数の個数: 24

約数和(自身を含む): 49939008

約数和(自身を除く): 29131228

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 148627, 297254, 594508, 743135, 1040389, 1486270, 2080778, 2972540, 4161556, 5201945, 10403890, 20807780]

約数ペア:

[(1, 20807780), (2, 10403890), (4, 5201945), (5, 4161556), (7, 2972540), (10, 2080778), (14, 1486270), (20, 1040389), (28, 743135), (35, 594508), (70, 297254), (140, 148627)]