20914281

素因数分解:

$3^7\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:225

約数の個数: 32

約数和(自身を含む): 32039040

約数和(自身を除く): 11124759

約数列:

[1, 3, 9, 27, 73, 81, 131, 219, 243, 393, 657, 729, 1179, 1971, 2187, 3537, 5913, 9563, 10611, 17739, 28689, 31833, 53217, 86067, 95499, 159651, 258201, 286497, 774603, 2323809, 6971427, 20914281]

約数ペア:

[(1, 20914281), (3, 6971427), (9, 2323809), (27, 774603), (73, 286497), (81, 258201), (131, 159651), (219, 95499), (243, 86067), (393, 53217), (657, 31833), (729, 28689), (1179, 17739), (1971, 10611), (2187, 9563), (3537, 5913)]