21040605

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{12637}}^1$

素因数の和:12685

約数の個数: 24

約数和(自身を含む): 37459032

約数和(自身を除く): 16418427

約数列:

[1, 3, 5, 9, 15, 37, 45, 111, 185, 333, 555, 1665, 12637, 37911, 63185, 113733, 189555, 467569, 568665, 1402707, 2337845, 4208121, 7013535, 21040605]

約数ペア:

[(1, 21040605), (3, 7013535), (5, 4208121), (9, 2337845), (15, 1402707), (37, 568665), (45, 467569), (111, 189555), (185, 113733), (333, 63185), (555, 37911), (1665, 12637)]