28478891

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{233}}^1\times {\mathrm{919}}^1$

素因数の和:1178

約数の個数: 16

約数和(自身を含む): 34444800

約数和(自身を除く): 5965909

約数列:

[1, 7, 19, 133, 233, 919, 1631, 4427, 6433, 17461, 30989, 122227, 214127, 1498889, 4068413, 28478891]

約数ペア:

[(1, 28478891), (7, 4068413), (19, 1498889), (133, 214127), (233, 122227), (919, 30989), (1631, 17461), (4427, 6433)]