20637297

素因数分解:

$3^2\times {\mathrm{109}}^2\times {\mathrm{193}}^1$

素因数の和:417

約数の個数: 18

約数和(自身を含む): 30241302

約数和(自身を除く): 9604005

約数列:

[1, 3, 9, 109, 193, 327, 579, 981, 1737, 11881, 21037, 35643, 63111, 106929, 189333, 2293033, 6879099, 20637297]

約数ペア:

[(1, 20637297), (3, 6879099), (9, 2293033), (109, 189333), (193, 106929), (327, 63111), (579, 35643), (981, 21037), (1737, 11881)]