21044367

素因数分解:

$3^4\times {\mathrm{73}}^1\times {\mathrm{3559}}^1$

素因数の和:3644

約数の個数: 20

約数和(自身を含む): 31876240

約数和(自身を除く): 10831873

約数列:

[1, 3, 9, 27, 73, 81, 219, 657, 1971, 3559, 5913, 10677, 32031, 96093, 259807, 288279, 779421, 2338263, 7014789, 21044367]

約数ペア:

[(1, 21044367), (3, 7014789), (9, 2338263), (27, 779421), (73, 288279), (81, 259807), (219, 96093), (657, 32031), (1971, 10677), (3559, 5913)]