278889111

素因数分解:

$3^2\times {\mathrm{149}}^1\times {\mathrm{207971}}^1$

素因数の和:208126

約数の個数: 12

約数和(自身を含む): 405545400

約数和(自身を除く): 126656289

約数列:

[1, 3, 9, 149, 447, 1341, 207971, 623913, 1871739, 30987679, 92963037, 278889111]

約数ペア:

[(1, 278889111), (3, 92963037), (9, 30987679), (149, 1871739), (447, 623913), (1341, 207971)]