199989080

素因数分解:

$2^3\times 5^1\times {\mathrm{4999727}}^1$

素因数の和:4999738

約数の個数: 16

約数和(自身を含む): 449975520

約数和(自身を除く): 249986440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4999727, 9999454, 19998908, 24998635, 39997816, 49997270, 99994540, 199989080]

約数ペア:

[(1, 199989080), (2, 99994540), (4, 49997270), (5, 39997816), (8, 24998635), (10, 19998908), (20, 9999454), (40, 4999727)]