21093993

素因数分解:

$3^3\times {\mathrm{163}}^1\times {\mathrm{4793}}^1$

素因数の和:4965

約数の個数: 16

約数和(自身を含む): 31448640

約数和(自身を除く): 10354647

約数列:

[1, 3, 9, 27, 163, 489, 1467, 4401, 4793, 14379, 43137, 129411, 781259, 2343777, 7031331, 21093993]

約数ペア:

[(1, 21093993), (3, 7031331), (9, 2343777), (27, 781259), (163, 129411), (489, 43137), (1467, 14379), (4401, 4793)]