20322505

素因数分解:

$5^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{761}}^1$

素因数の和:889

約数の個数: 24

約数和(自身を含む): 28666440

約数和(自身を除く): 8343935

約数列:

[1, 5, 7, 35, 49, 109, 245, 545, 761, 763, 3805, 3815, 5327, 5341, 26635, 26705, 37289, 82949, 186445, 414745, 580643, 2903215, 4064501, 20322505]

約数ペア:

[(1, 20322505), (5, 4064501), (7, 2903215), (35, 580643), (49, 414745), (109, 186445), (245, 82949), (545, 37289), (761, 26705), (763, 26635), (3805, 5341), (3815, 5327)]