18371691

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{239}}^1$

素因数の和:337

約数の個数: 40

約数和(自身を含む): 30085440

約数和(自身を除く): 11713749

約数列:

[1, 3, 9, 13, 27, 39, 73, 81, 117, 219, 239, 351, 657, 717, 949, 1053, 1971, 2151, 2847, 3107, 5913, 6453, 8541, 9321, 17447, 19359, 25623, 27963, 52341, 76869, 83889, 157023, 226811, 251667, 471069, 680433, 1413207, 2041299, 6123897, 18371691]

約数ペア:

[(1, 18371691), (3, 6123897), (9, 2041299), (13, 1413207), (27, 680433), (39, 471069), (73, 251667), (81, 226811), (117, 157023), (219, 83889), (239, 76869), (351, 52341), (657, 27963), (717, 25623), (949, 19359), (1053, 17447), (1971, 9321), (2151, 8541), (2847, 6453), (3107, 5913)]