20628105

素因数分解:

$3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{5351}}^1$

素因数の和:5616

約数の個数: 16

約数和(自身を含む): 33139584

約数和(自身を除く): 12511479

約数列:

[1, 3, 5, 15, 257, 771, 1285, 3855, 5351, 16053, 26755, 80265, 1375207, 4125621, 6876035, 20628105]

約数ペア:

[(1, 20628105), (3, 6876035), (5, 4125621), (15, 1375207), (257, 80265), (771, 26755), (1285, 16053), (3855, 5351)]