21331989

素因数分解:

$3^2\times 7^1\times {\mathrm{571}}^1\times {\mathrm{593}}^1$

素因数の和:1177

約数の個数: 24

約数和(自身を含む): 35335872

約数和(自身を除く): 14003883

約数列:

[1, 3, 7, 9, 21, 63, 571, 593, 1713, 1779, 3997, 4151, 5139, 5337, 11991, 12453, 35973, 37359, 338603, 1015809, 2370221, 3047427, 7110663, 21331989]

約数ペア:

[(1, 21331989), (3, 7110663), (7, 3047427), (9, 2370221), (21, 1015809), (63, 338603), (571, 37359), (593, 35973), (1713, 12453), (1779, 11991), (3997, 5337), (4151, 5139)]