81018952

素因数分解:

$2^3\times 7^2\times {\mathrm{41}}^1\times {\mathrm{71}}^2$

素因数の和:203

約数の個数: 72

約数和(自身を含む): 183607830

約数和(自身を除く): 102588878

約数列:

[1, 2, 4, 7, 8, 14, 28, 41, 49, 56, 71, 82, 98, 142, 164, 196, 284, 287, 328, 392, 497, 568, 574, 994, 1148, 1988, 2009, 2296, 2911, 3479, 3976, 4018, 5041, 5822, 6958, 8036, 10082, 11644, 13916, 16072, 20164, 20377, 23288, 27832, 35287, 40328, 40754, 70574, 81508, 141148, 142639, 163016, 206681, 247009, 282296, 285278, 413362, 494018, 570556, 826724, 988036, 1141112, 1446767, 1653448, 1976072, 2893534, 5787068, 10127369, 11574136, 20254738, 40509476, 81018952]

約数ペア:

[(1, 81018952), (2, 40509476), (4, 20254738), (7, 11574136), (8, 10127369), (14, 5787068), (28, 2893534), (41, 1976072), (49, 1653448), (56, 1446767), (71, 1141112), (82, 988036), (98, 826724), (142, 570556), (164, 494018), (196, 413362), (284, 285278), (287, 282296), (328, 247009), (392, 206681), (497, 163016), (568, 142639), (574, 141148), (994, 81508), (1148, 70574), (1988, 40754), (2009, 40328), (2296, 35287), (2911, 27832), (3479, 23288), (3976, 20377), (4018, 20164), (5041, 16072), (5822, 13916), (6958, 11644), (8036, 10082)]