261117

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{509}}^1$

素因数の和:537

約数の個数: 16

約数和(自身を含む): 408000

約数和(自身を除く): 146883

約数列:

[1, 3, 9, 19, 27, 57, 171, 509, 513, 1527, 4581, 9671, 13743, 29013, 87039, 261117]

約数ペア:

[(1, 261117), (3, 87039), (9, 29013), (19, 13743), (27, 9671), (57, 4581), (171, 1527), (509, 513)]