20698335

素因数分解:

$3^4\times 5^1\times 7^3\times {\mathrm{149}}^1$

素因数の和:187

約数の個数: 80

約数和(自身を含む): 43560000

約数和(自身を除く): 22861665

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 81, 105, 135, 147, 149, 189, 245, 315, 343, 405, 441, 447, 567, 735, 745, 945, 1029, 1043, 1323, 1341, 1715, 2205, 2235, 2835, 3087, 3129, 3969, 4023, 5145, 5215, 6615, 6705, 7301, 9261, 9387, 12069, 15435, 15645, 19845, 20115, 21903, 27783, 28161, 36505, 46305, 46935, 51107, 60345, 65709, 84483, 109515, 138915, 140805, 153321, 197127, 255535, 328545, 422415, 459963, 591381, 766605, 985635, 1379889, 2299815, 2956905, 4139667, 6899445, 20698335]

約数ペア:

[(1, 20698335), (3, 6899445), (5, 4139667), (7, 2956905), (9, 2299815), (15, 1379889), (21, 985635), (27, 766605), (35, 591381), (45, 459963), (49, 422415), (63, 328545), (81, 255535), (105, 197127), (135, 153321), (147, 140805), (149, 138915), (189, 109515), (245, 84483), (315, 65709), (343, 60345), (405, 51107), (441, 46935), (447, 46305), (567, 36505), (735, 28161), (745, 27783), (945, 21903), (1029, 20115), (1043, 19845), (1323, 15645), (1341, 15435), (1715, 12069), (2205, 9387), (2235, 9261), (2835, 7301), (3087, 6705), (3129, 6615), (3969, 5215), (4023, 5145)]