209568620

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{21341}}^1$

素因数の和:21841

約数の個数: 24

約数和(自身を含む): 441011088

約数和(自身を除く): 231442468

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1964, 2455, 4910, 9820, 21341, 42682, 85364, 106705, 213410, 426820, 10478431, 20956862, 41913724, 52392155, 104784310, 209568620]

約数ペア:

[(1, 209568620), (2, 104784310), (4, 52392155), (5, 41913724), (10, 20956862), (20, 10478431), (491, 426820), (982, 213410), (1964, 106705), (2455, 85364), (4910, 42682), (9820, 21341)]