19007989

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1117}}^1$

素因数の和:1165

約数の個数: 32

約数和(自身を含む): 27046656

約数和(自身を除く): 8038667

約数列:

[1, 7, 11, 13, 17, 77, 91, 119, 143, 187, 221, 1001, 1117, 1309, 1547, 2431, 7819, 12287, 14521, 17017, 18989, 86009, 101647, 132923, 159731, 208879, 246857, 1118117, 1462153, 1727999, 2715427, 19007989]

約数ペア:

[(1, 19007989), (7, 2715427), (11, 1727999), (13, 1462153), (17, 1118117), (77, 246857), (91, 208879), (119, 159731), (143, 132923), (187, 101647), (221, 86009), (1001, 18989), (1117, 17017), (1309, 14521), (1547, 12287), (2431, 7819)]