28838740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{205991}}^1$

素因数の和:206007

約数の個数: 24

約数和(自身を含む): 69213312

約数和(自身を除く): 40374572

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 205991, 411982, 823964, 1029955, 1441937, 2059910, 2883874, 4119820, 5767748, 7209685, 14419370, 28838740]

約数ペア:

[(1, 28838740), (2, 14419370), (4, 7209685), (5, 5767748), (7, 4119820), (10, 2883874), (14, 2059910), (20, 1441937), (28, 1029955), (35, 823964), (70, 411982), (140, 205991)]