19518219

素因数分解:

$3^3\times 7^2\times {\mathrm{14753}}^1$

素因数の和:14776

約数の個数: 24

約数和(自身を含む): 33639120

約数和(自身を除く): 14120901

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 14753, 44259, 103271, 132777, 309813, 398331, 722897, 929439, 2168691, 2788317, 6506073, 19518219]

約数ペア:

[(1, 19518219), (3, 6506073), (7, 2788317), (9, 2168691), (21, 929439), (27, 722897), (49, 398331), (63, 309813), (147, 132777), (189, 103271), (441, 44259), (1323, 14753)]