20981548

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{39439}}^1$

素因数の和:39469

約数の個数: 24

約数和(自身を含む): 44172800

約数和(自身を除く): 23191252

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 39439, 78878, 157756, 276073, 552146, 749341, 1104292, 1498682, 2997364, 5245387, 10490774, 20981548]

約数ペア:

[(1, 20981548), (2, 10490774), (4, 5245387), (7, 2997364), (14, 1498682), (19, 1104292), (28, 749341), (38, 552146), (76, 276073), (133, 157756), (266, 78878), (532, 39439)]