19408040

素因数分解:

$2^3\times 5^1\times {\mathrm{485201}}^1$

素因数の和:485212

約数の個数: 16

約数和(自身を含む): 43668180

約数和(自身を除く): 24260140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 485201, 970402, 1940804, 2426005, 3881608, 4852010, 9704020, 19408040]

約数ペア:

[(1, 19408040), (2, 9704020), (4, 4852010), (5, 3881608), (8, 2426005), (10, 1940804), (20, 970402), (40, 485201)]