18777740

素因数分解:

$2^2\times 5^1\times {\mathrm{859}}^1\times {\mathrm{1093}}^1$

素因数の和:1961

約数の個数: 24

約数和(自身を含む): 39515280

約数和(自身を除く): 20737540

約数列:

[1, 2, 4, 5, 10, 20, 859, 1093, 1718, 2186, 3436, 4295, 4372, 5465, 8590, 10930, 17180, 21860, 938887, 1877774, 3755548, 4694435, 9388870, 18777740]

約数ペア:

[(1, 18777740), (2, 9388870), (4, 4694435), (5, 3755548), (10, 1877774), (20, 938887), (859, 21860), (1093, 17180), (1718, 10930), (2186, 8590), (3436, 5465), (4295, 4372)]