20404909

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{569}}^1$

素因数の和:732

約数の個数: 16

約数和(自身を含む): 24076800

約数和(自身を除く): 3671891

約数列:

[1, 7, 47, 109, 329, 569, 763, 3983, 5123, 26743, 35861, 62021, 187201, 434147, 2914987, 20404909]

約数ペア:

[(1, 20404909), (7, 2914987), (47, 434147), (109, 187201), (329, 62021), (569, 35861), (763, 26743), (3983, 5123)]