205616740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{209813}}^1$

素因数の和:209836

約数の個数: 36

約数和(自身を含む): 502294716

約数和(自身を除く): 296677976

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 209813, 419626, 839252, 1049065, 1468691, 2098130, 2937382, 4196260, 5874764, 7343455, 10280837, 14686910, 20561674, 29373820, 41123348, 51404185, 102808370, 205616740]

約数ペア:

[(1, 205616740), (2, 102808370), (4, 51404185), (5, 41123348), (7, 29373820), (10, 20561674), (14, 14686910), (20, 10280837), (28, 7343455), (35, 5874764), (49, 4196260), (70, 2937382), (98, 2098130), (140, 1468691), (196, 1049065), (245, 839252), (490, 419626), (980, 209813)]