18737847

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{691}}^1$

素因数の和:851

約数の個数: 24

約数和(自身を含む): 28499328

約数和(自身を除く): 9761481

約数列:

[1, 3, 9, 23, 69, 131, 207, 393, 691, 1179, 2073, 3013, 6219, 9039, 15893, 27117, 47679, 90521, 143037, 271563, 814689, 2081983, 6245949, 18737847]

約数ペア:

[(1, 18737847), (3, 6245949), (9, 2081983), (23, 814689), (69, 271563), (131, 143037), (207, 90521), (393, 47679), (691, 27117), (1179, 15893), (2073, 9039), (3013, 6219)]