81660945

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{320239}}^1$

素因数の和:320264

約数の個数: 16

約数和(自身を含む): 138343680

約数和(自身を除く): 56682735

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 320239, 960717, 1601195, 4803585, 5444063, 16332189, 27220315, 81660945]

約数ペア:

[(1, 81660945), (3, 27220315), (5, 16332189), (15, 5444063), (17, 4803585), (51, 1601195), (85, 960717), (255, 320239)]