20818315

素因数分解:

$5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{2819}}^1$

素因数の和:3042

約数の個数: 16

約数和(自身を含む): 28696320

約数和(自身を除く): 7878005

約数列:

[1, 5, 7, 35, 211, 1055, 1477, 2819, 7385, 14095, 19733, 98665, 594809, 2974045, 4163663, 20818315]

約数ペア:

[(1, 20818315), (5, 4163663), (7, 2974045), (35, 594809), (211, 98665), (1055, 19733), (1477, 14095), (2819, 7385)]