17990971640

素因数分解:

$2^3\times 5^1\times {\mathrm{449774291}}^1$

素因数の和:449774302

約数の個数: 16

約数和(自身を含む): 40479686280

約数和(自身を除く): 22488714640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 449774291, 899548582, 1799097164, 2248871455, 3598194328, 4497742910, 8995485820, 17990971640]

約数ペア:

[(1, 17990971640), (2, 8995485820), (4, 4497742910), (5, 3598194328), (8, 2248871455), (10, 1799097164), (20, 899548582), (40, 449774291)]