20642690

素因数分解:

$2^1\times 5^1\times {\mathrm{457}}^1\times {\mathrm{4517}}^1$

素因数の和:4981

約数の個数: 16

約数和(自身を含む): 37246392

約数和(自身を除く): 16603702

約数列:

[1, 2, 5, 10, 457, 914, 2285, 4517, 4570, 9034, 22585, 45170, 2064269, 4128538, 10321345, 20642690]

約数ペア:

[(1, 20642690), (2, 10321345), (5, 4128538), (10, 2064269), (457, 45170), (914, 22585), (2285, 9034), (4517, 4570)]