20657140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{147551}}^1$

素因数の和:147567

約数の個数: 24

約数和(自身を含む): 49577472

約数和(自身を除く): 28920332

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 147551, 295102, 590204, 737755, 1032857, 1475510, 2065714, 2951020, 4131428, 5164285, 10328570, 20657140]

約数ペア:

[(1, 20657140), (2, 10328570), (4, 5164285), (5, 4131428), (7, 2951020), (10, 2065714), (14, 1475510), (20, 1032857), (28, 737755), (35, 590204), (70, 295102), (140, 147551)]