205125916040

素因数分解:

$2^3\times 5^1\times {\mathrm{5128147901}}^1$

素因数の和:5128147912

約数の個数: 16

約数和(自身を含む): 461533311180

約数和(自身を除く): 256407395140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5128147901, 10256295802, 20512591604, 25640739505, 41025183208, 51281479010, 102562958020, 205125916040]

約数ペア:

[(1, 205125916040), (2, 102562958020), (4, 51281479010), (5, 41025183208), (8, 25640739505), (10, 20512591604), (20, 10256295802), (40, 5128147901)]