28908891

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{193}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 49027680

約数和(自身を除く): 20118789

約数列:

[1, 3, 9, 11, 17, 33, 51, 89, 99, 153, 187, 193, 267, 561, 579, 801, 979, 1513, 1683, 1737, 2123, 2937, 3281, 4539, 6369, 8811, 9843, 13617, 16643, 17177, 19107, 29529, 36091, 49929, 51531, 108273, 149787, 154593, 188947, 292009, 324819, 566841, 876027, 1700523, 2628081, 3212099, 9636297, 28908891]

約数ペア:

[(1, 28908891), (3, 9636297), (9, 3212099), (11, 2628081), (17, 1700523), (33, 876027), (51, 566841), (89, 324819), (99, 292009), (153, 188947), (187, 154593), (193, 149787), (267, 108273), (561, 51531), (579, 49929), (801, 36091), (979, 29529), (1513, 19107), (1683, 17177), (1737, 16643), (2123, 13617), (2937, 9843), (3281, 8811), (4539, 6369)]