20656293

素因数分解:

$3^1\times 7^2\times {\mathrm{83}}^1\times {\mathrm{1693}}^1$

素因数の和:1793

約数の個数: 24

約数和(自身を含む): 32443488

約数和(自身を除く): 11787195

約数列:

[1, 3, 7, 21, 49, 83, 147, 249, 581, 1693, 1743, 4067, 5079, 11851, 12201, 35553, 82957, 140519, 248871, 421557, 983633, 2950899, 6885431, 20656293]

約数ペア:

[(1, 20656293), (3, 6885431), (7, 2950899), (21, 983633), (49, 421557), (83, 248871), (147, 140519), (249, 82957), (581, 35553), (1693, 12201), (1743, 11851), (4067, 5079)]