16721705

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{257}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 27195264

約数和(自身を除く): 10473559

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 143, 169, 257, 385, 455, 715, 845, 1001, 1183, 1285, 1799, 1859, 2827, 3341, 5005, 5915, 8995, 9295, 13013, 14135, 16705, 19789, 23387, 36751, 43433, 65065, 98945, 116935, 183755, 217165, 257257, 304031, 477763, 1286285, 1520155, 2388815, 3344341, 16721705]

約数ペア:

[(1, 16721705), (5, 3344341), (7, 2388815), (11, 1520155), (13, 1286285), (35, 477763), (55, 304031), (65, 257257), (77, 217165), (91, 183755), (143, 116935), (169, 98945), (257, 65065), (385, 43433), (455, 36751), (715, 23387), (845, 19789), (1001, 16705), (1183, 14135), (1285, 13013), (1799, 9295), (1859, 8995), (2827, 5915), (3341, 5005)]