281664721

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{67079}}^1$

素因数の和:67128

約数の個数: 16

約数和(自身を含む): 338083200

約数和(自身を除く): 56418479

約数列:

[1, 13, 17, 19, 221, 247, 323, 4199, 67079, 872027, 1140343, 1274501, 14824459, 16568513, 21666517, 281664721]

約数ペア:

[(1, 281664721), (13, 21666517), (17, 16568513), (19, 14824459), (221, 1274501), (247, 1140343), (323, 872027), (4199, 67079)]