199982480

素因数分解:

$2^4\times 5^1\times {\mathrm{2499781}}^1$

素因数の和:2499794

約数の個数: 20

約数和(自身を含む): 464959452

約数和(自身を除く): 264976972

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2499781, 4999562, 9999124, 12498905, 19998248, 24997810, 39996496, 49995620, 99991240, 199982480]

約数ペア:

[(1, 199982480), (2, 99991240), (4, 49995620), (5, 39996496), (8, 24997810), (10, 19998248), (16, 12498905), (20, 9999124), (40, 4999562), (80, 2499781)]