21756317

素因数分解:

${\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{313}}^1$

素因数の和:484

約数の個数: 16

約数和(自身を含む): 24416640

約数和(自身を除く): 2660323

約数列:

[1, 11, 71, 89, 313, 781, 979, 3443, 6319, 22223, 27857, 69509, 244453, 306427, 1977847, 21756317]

約数ペア:

[(1, 21756317), (11, 1977847), (71, 306427), (89, 244453), (313, 69509), (781, 27857), (979, 22223), (3443, 6319)]