18723907

素因数分解:

${\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1$

素因数の和:330

約数の個数: 16

約数和(自身を含む): 20127744

約数和(自身を除く): 1403837

約数列:

[1, 31, 47, 71, 181, 1457, 2201, 3337, 5611, 8507, 12851, 103447, 263717, 398381, 603997, 18723907]

約数ペア:

[(1, 18723907), (31, 603997), (47, 398381), (71, 263717), (181, 103447), (1457, 12851), (2201, 8507), (3337, 5611)]