20512861180

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{2990213}}^1$

素因数の和:2990243

約数の個数: 48

約数和(自身を含む): 50235595200

約数和(自身を除く): 29722734020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 6860, 2990213, 5980426, 11960852, 14951065, 20931491, 29902130, 41862982, 59804260, 83725964, 104657455, 146520437, 209314910, 293040874, 418629820, 586081748, 732602185, 1025643059, 1465204370, 2051286118, 2930408740, 4102572236, 5128215295, 10256430590, 20512861180]

約数ペア:

[(1, 20512861180), (2, 10256430590), (4, 5128215295), (5, 4102572236), (7, 2930408740), (10, 2051286118), (14, 1465204370), (20, 1025643059), (28, 732602185), (35, 586081748), (49, 418629820), (70, 293040874), (98, 209314910), (140, 146520437), (196, 104657455), (245, 83725964), (343, 59804260), (490, 41862982), (686, 29902130), (980, 20931491), (1372, 14951065), (1715, 11960852), (3430, 5980426), (6860, 2990213)]