21845889

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{571}}^1$

素因数の和:702

約数の個数: 32

約数和(自身を含む): 35235200

約数和(自身を除く): 13389311

約数列:

[1, 3, 9, 13, 27, 39, 109, 117, 327, 351, 571, 981, 1417, 1713, 2943, 4251, 5139, 7423, 12753, 15417, 22269, 38259, 62239, 66807, 186717, 200421, 560151, 809107, 1680453, 2427321, 7281963, 21845889]

約数ペア:

[(1, 21845889), (3, 7281963), (9, 2427321), (13, 1680453), (27, 809107), (39, 560151), (109, 200421), (117, 186717), (327, 66807), (351, 62239), (571, 38259), (981, 22269), (1417, 15417), (1713, 12753), (2943, 7423), (4251, 5139)]