8640891

素因数分解:

$3^3\times 7^1\times {\mathrm{131}}^1\times {\mathrm{349}}^1$

素因数の和:496

約数の個数: 32

約数和(自身を含む): 14784000

約数和(自身を除く): 6143109

約数列:

[1, 3, 7, 9, 21, 27, 63, 131, 189, 349, 393, 917, 1047, 1179, 2443, 2751, 3141, 3537, 7329, 8253, 9423, 21987, 24759, 45719, 65961, 137157, 320033, 411471, 960099, 1234413, 2880297, 8640891]

約数ペア:

[(1, 8640891), (3, 2880297), (7, 1234413), (9, 960099), (21, 411471), (27, 320033), (63, 137157), (131, 65961), (189, 45719), (349, 24759), (393, 21987), (917, 9423), (1047, 8253), (1179, 7329), (2443, 3537), (2751, 3141)]