20156355640

素因数分解:

$2^3\times 5^1\times {\mathrm{18191}}^1\times {\mathrm{27701}}^1$

素因数の和:45903

約数の個数: 32

約数和(自身を含む): 45355930560

約数和(自身を除く): 25199574920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 18191, 27701, 36382, 55402, 72764, 90955, 110804, 138505, 145528, 181910, 221608, 277010, 363820, 554020, 727640, 1108040, 503908891, 1007817782, 2015635564, 2519544455, 4031271128, 5039088910, 10078177820, 20156355640]

約数ペア:

[(1, 20156355640), (2, 10078177820), (4, 5039088910), (5, 4031271128), (8, 2519544455), (10, 2015635564), (20, 1007817782), (40, 503908891), (18191, 1108040), (27701, 727640), (36382, 554020), (55402, 363820), (72764, 277010), (90955, 221608), (110804, 181910), (138505, 145528)]