81189423

素因数分解:

$3^2\times 7^2\times {\mathrm{71}}^1\times {\mathrm{2593}}^1$

素因数の和:2684

約数の個数: 36

約数和(自身を含む): 138395088

約数和(自身を除く): 57205665

約数列:

[1, 3, 7, 9, 21, 49, 63, 71, 147, 213, 441, 497, 639, 1491, 2593, 3479, 4473, 7779, 10437, 18151, 23337, 31311, 54453, 127057, 163359, 184103, 381171, 552309, 1143513, 1288721, 1656927, 3866163, 9021047, 11598489, 27063141, 81189423]

約数ペア:

[(1, 81189423), (3, 27063141), (7, 11598489), (9, 9021047), (21, 3866163), (49, 1656927), (63, 1288721), (71, 1143513), (147, 552309), (213, 381171), (441, 184103), (497, 163359), (639, 127057), (1491, 54453), (2593, 31311), (3479, 23337), (4473, 18151), (7779, 10437)]