82478740

素因数分解:

$2^2\times 5^1\times {\mathrm{1999}}^1\times {\mathrm{2063}}^1$

素因数の和:4071

約数の個数: 24

約数和(自身を含む): 173376000

約数和(自身を除く): 90897260

約数列:

[1, 2, 4, 5, 10, 20, 1999, 2063, 3998, 4126, 7996, 8252, 9995, 10315, 19990, 20630, 39980, 41260, 4123937, 8247874, 16495748, 20619685, 41239370, 82478740]

約数ペア:

[(1, 82478740), (2, 41239370), (4, 20619685), (5, 16495748), (10, 8247874), (20, 4123937), (1999, 41260), (2063, 39980), (3998, 20630), (4126, 19990), (7996, 10315), (8252, 9995)]