21979186

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{4993}}^1$

素因数の和:5097

約数の個数: 16

約数和(自身を含む): 34518528

約数和(自身を除く): 12539342

約数列:

[1, 2, 31, 62, 71, 142, 2201, 4402, 4993, 9986, 154783, 309566, 354503, 709006, 10989593, 21979186]

約数ペア:

[(1, 21979186), (2, 10989593), (31, 709006), (62, 354503), (71, 309566), (142, 154783), (2201, 9986), (4402, 4993)]