861381

素因数分解:

$3^3\times {\mathrm{61}}^1\times {\mathrm{523}}^1$

素因数の和:593

約数の個数: 16

約数和(自身を含む): 1299520

約数和(自身を除く): 438139

約数列:

[1, 3, 9, 27, 61, 183, 523, 549, 1569, 1647, 4707, 14121, 31903, 95709, 287127, 861381]

約数ペア:

[(1, 861381), (3, 287127), (9, 95709), (27, 31903), (61, 14121), (183, 4707), (523, 1647), (549, 1569)]