20278431

素因数分解:

$3^4\times {\mathrm{79}}^1\times {\mathrm{3169}}^1$

素因数の和:3260

約数の個数: 20

約数和(自身を含む): 30685600

約数和(自身を除く): 10407169

約数列:

[1, 3, 9, 27, 79, 81, 237, 711, 2133, 3169, 6399, 9507, 28521, 85563, 250351, 256689, 751053, 2253159, 6759477, 20278431]

約数ペア:

[(1, 20278431), (3, 6759477), (9, 2253159), (27, 751053), (79, 256689), (81, 250351), (237, 85563), (711, 28521), (2133, 9507), (3169, 6399)]