199983440

素因数分解:

$2^4\times 5^1\times {\mathrm{2499793}}^1$

素因数の和:2499806

約数の個数: 20

約数和(自身を含む): 464961684

約数和(自身を除く): 264978244

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2499793, 4999586, 9999172, 12498965, 19998344, 24997930, 39996688, 49995860, 99991720, 199983440]

約数ペア:

[(1, 199983440), (2, 99991720), (4, 49995860), (5, 39996688), (8, 24997930), (10, 19998344), (16, 12498965), (20, 9999172), (40, 4999586), (80, 2499793)]