28143909

素因数分解:

$3^3\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:322

約数の個数: 32

約数和(自身を含む): 42979200

約数和(自身を除く): 14835291

約数列:

[1, 3, 9, 27, 73, 109, 131, 219, 327, 393, 657, 981, 1179, 1971, 2943, 3537, 7957, 9563, 14279, 23871, 28689, 42837, 71613, 86067, 128511, 214839, 258201, 385533, 1042367, 3127101, 9381303, 28143909]

約数ペア:

[(1, 28143909), (3, 9381303), (9, 3127101), (27, 1042367), (73, 385533), (109, 258201), (131, 214839), (219, 128511), (327, 86067), (393, 71613), (657, 42837), (981, 28689), (1179, 23871), (1971, 14279), (2943, 9563), (3537, 7957)]