20921391

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{62827}}^1$

素因数の和:62870

約数の個数: 12

約数和(自身を含む): 31037032

約数和(自身を除く): 10115641

約数列:

[1, 3, 9, 37, 111, 333, 62827, 188481, 565443, 2324599, 6973797, 20921391]

約数ペア:

[(1, 20921391), (3, 6973797), (9, 2324599), (37, 565443), (111, 188481), (333, 62827)]