18872193

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{509}}^1\times {\mathrm{727}}^1$

素因数の和:1256

約数の個数: 16

約数和(自身を含む): 26732160

約数和(自身を除く): 7859967

約数列:

[1, 3, 17, 51, 509, 727, 1527, 2181, 8653, 12359, 25959, 37077, 370043, 1110129, 6290731, 18872193]

約数ペア:

[(1, 18872193), (3, 6290731), (17, 1110129), (51, 370043), (509, 37077), (727, 25959), (1527, 12359), (2181, 8653)]