11980990

素因数分解:

$2^1\times 5^1\times 7^4\times {\mathrm{499}}^1$

素因数の和:534

約数の個数: 40

約数和(自身を含む): 25209000

約数和(自身を除く): 13228010

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 343, 490, 499, 686, 998, 1715, 2401, 2495, 3430, 3493, 4802, 4990, 6986, 12005, 17465, 24010, 24451, 34930, 48902, 122255, 171157, 244510, 342314, 855785, 1198099, 1711570, 2396198, 5990495, 11980990]

約数ペア:

[(1, 11980990), (2, 5990495), (5, 2396198), (7, 1711570), (10, 1198099), (14, 855785), (35, 342314), (49, 244510), (70, 171157), (98, 122255), (245, 48902), (343, 34930), (490, 24451), (499, 24010), (686, 17465), (998, 12005), (1715, 6986), (2401, 4990), (2495, 4802), (3430, 3493)]