20993945

素因数分解:

$5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{5503}}^1$

素因数の和:5624

約数の個数: 16

約数和(自身を含む): 29061120

約数和(自身を除く): 8067175

約数列:

[1, 5, 7, 35, 109, 545, 763, 3815, 5503, 27515, 38521, 192605, 599827, 2999135, 4198789, 20993945]

約数ペア:

[(1, 20993945), (5, 4198789), (7, 2999135), (35, 599827), (109, 192605), (545, 38521), (763, 27515), (3815, 5503)]