18430780

素因数分解:

$2^2\times 5^1\times {\mathrm{461}}^1\times {\mathrm{1999}}^1$

素因数の和:2469

約数の個数: 24

約数和(自身を含む): 38808000

約数和(自身を除く): 20377220

約数列:

[1, 2, 4, 5, 10, 20, 461, 922, 1844, 1999, 2305, 3998, 4610, 7996, 9220, 9995, 19990, 39980, 921539, 1843078, 3686156, 4607695, 9215390, 18430780]

約数ペア:

[(1, 18430780), (2, 9215390), (4, 4607695), (5, 3686156), (10, 1843078), (20, 921539), (461, 39980), (922, 19990), (1844, 9995), (1999, 9220), (2305, 7996), (3998, 4610)]