40538660

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{10289}}^1$

素因数の和:10495

約数の個数: 24

約数和(自身を含む): 85571640

約数和(自身を除く): 45032980

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 10289, 20578, 41156, 51445, 102890, 205780, 2026933, 4053866, 8107732, 10134665, 20269330, 40538660]

約数ペア:

[(1, 40538660), (2, 20269330), (4, 10134665), (5, 8107732), (10, 4053866), (20, 2026933), (197, 205780), (394, 102890), (788, 51445), (985, 41156), (1970, 20578), (3940, 10289)]