18939909

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{3581}}^1$

素因数の和:3668

約数の個数: 16

約数和(自身を含む): 26478144

約数和(自身を除く): 7538235

約数列:

[1, 3, 41, 43, 123, 129, 1763, 3581, 5289, 10743, 146821, 153983, 440463, 461949, 6313303, 18939909]

約数ペア:

[(1, 18939909), (3, 6313303), (41, 461949), (43, 440463), (123, 153983), (129, 146821), (1763, 10743), (3581, 5289)]