21438655

素因数分解:

$5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{2903}}^1$

素因数の和:3126

約数の個数: 16

約数和(自身を含む): 29551104

約数和(自身を除く): 8112449

約数列:

[1, 5, 7, 35, 211, 1055, 1477, 2903, 7385, 14515, 20321, 101605, 612533, 3062665, 4287731, 21438655]

約数ペア:

[(1, 21438655), (5, 4287731), (7, 3062665), (35, 612533), (211, 101605), (1055, 20321), (1477, 14515), (2903, 7385)]