20643140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{147451}}^1$

素因数の和:147467

約数の個数: 24

約数和(自身を含む): 49543872

約数和(自身を除く): 28900732

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 147451, 294902, 589804, 737255, 1032157, 1474510, 2064314, 2949020, 4128628, 5160785, 10321570, 20643140]

約数ペア:

[(1, 20643140), (2, 10321570), (4, 5160785), (5, 4128628), (7, 2949020), (10, 2064314), (14, 1474510), (20, 1032157), (28, 737255), (35, 589804), (70, 294902), (140, 147451)]