18781133

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:185

約数の個数: 32

約数和(自身を含む): 23887872

約数和(自身を除く): 5106739

約数列:

[1, 7, 23, 31, 53, 71, 161, 217, 371, 497, 713, 1219, 1633, 1643, 2201, 3763, 4991, 8533, 11431, 11501, 15407, 26341, 37789, 50623, 86549, 116653, 264523, 354361, 605843, 816571, 2683019, 18781133]

約数ペア:

[(1, 18781133), (7, 2683019), (23, 816571), (31, 605843), (53, 354361), (71, 264523), (161, 116653), (217, 86549), (371, 50623), (497, 37789), (713, 26341), (1219, 15407), (1633, 11501), (1643, 11431), (2201, 8533), (3763, 4991)]