28998081

素因数分解:

$3^4\times 7^1\times {\mathrm{199}}^1\times {\mathrm{257}}^1$

素因数の和:475

約数の個数: 40

約数和(自身を含む): 49948800

約数和(自身を除く): 20950719

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 199, 257, 567, 597, 771, 1393, 1791, 1799, 2313, 4179, 5373, 5397, 6939, 12537, 16119, 16191, 20817, 37611, 48573, 51143, 112833, 145719, 153429, 358001, 460287, 1074003, 1380861, 3222009, 4142583, 9666027, 28998081]

約数ペア:

[(1, 28998081), (3, 9666027), (7, 4142583), (9, 3222009), (21, 1380861), (27, 1074003), (63, 460287), (81, 358001), (189, 153429), (199, 145719), (257, 112833), (567, 51143), (597, 48573), (771, 37611), (1393, 20817), (1791, 16191), (1799, 16119), (2313, 12537), (4179, 6939), (5373, 5397)]