20988590

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{683}}^1$

素因数の和:1136

約数の個数: 32

約数和(自身を含む): 43338240

約数和(自身を除く): 22349650

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 439, 683, 878, 1366, 2195, 3073, 3415, 4390, 4781, 6146, 6830, 9562, 15365, 23905, 30730, 47810, 299837, 599674, 1499185, 2098859, 2998370, 4197718, 10494295, 20988590]

約数ペア:

[(1, 20988590), (2, 10494295), (5, 4197718), (7, 2998370), (10, 2098859), (14, 1499185), (35, 599674), (70, 299837), (439, 47810), (683, 30730), (878, 23905), (1366, 15365), (2195, 9562), (3073, 6830), (3415, 6146), (4390, 4781)]