19688669

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1$

素因数の和:150

約数の個数: 48

約数和(自身を含む): 28460160

約数和(自身を除く): 8771491

約数列:

[1, 7, 11, 13, 17, 77, 89, 91, 119, 143, 169, 187, 221, 623, 979, 1001, 1157, 1183, 1309, 1513, 1547, 1859, 2431, 2873, 6853, 8099, 10591, 12727, 13013, 15041, 16643, 17017, 19669, 20111, 31603, 89089, 105287, 116501, 137683, 165451, 216359, 221221, 255697, 1158157, 1514513, 1789879, 2812667, 19688669]

約数ペア:

[(1, 19688669), (7, 2812667), (11, 1789879), (13, 1514513), (17, 1158157), (77, 255697), (89, 221221), (91, 216359), (119, 165451), (143, 137683), (169, 116501), (187, 105287), (221, 89089), (623, 31603), (979, 20111), (1001, 19669), (1157, 17017), (1183, 16643), (1309, 15041), (1513, 13013), (1547, 12727), (1859, 10591), (2431, 8099), (2873, 6853)]