7140231

素因数分解:

$3^4\times 7^3\times {\mathrm{257}}^1$

素因数の和:290

約数の個数: 40

約数和(自身を含む): 12487200

約数和(自身を除く): 5346969

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 257, 343, 441, 567, 771, 1029, 1323, 1799, 2313, 3087, 3969, 5397, 6939, 9261, 12593, 16191, 20817, 27783, 37779, 48573, 88151, 113337, 145719, 264453, 340011, 793359, 1020033, 2380077, 7140231]

約数ペア:

[(1, 7140231), (3, 2380077), (7, 1020033), (9, 793359), (21, 340011), (27, 264453), (49, 145719), (63, 113337), (81, 88151), (147, 48573), (189, 37779), (257, 27783), (343, 20817), (441, 16191), (567, 12593), (771, 9261), (1029, 6939), (1323, 5397), (1799, 3969), (2313, 3087)]