20560240

素因数分解:

$2^4\times 5^1\times {\mathrm{257003}}^1$

素因数の和:257016

約数の個数: 20

約数和(自身を含む): 47802744

約数和(自身を除く): 27242504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 257003, 514006, 1028012, 1285015, 2056024, 2570030, 4112048, 5140060, 10280120, 20560240]

約数ペア:

[(1, 20560240), (2, 10280120), (4, 5140060), (5, 4112048), (8, 2570030), (10, 2056024), (16, 1285015), (20, 1028012), (40, 514006), (80, 257003)]