20156508

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{449}}^1$

素因数の和:531

約数の個数: 72

約数和(自身を含む): 54054000

約数和(自身を除く): 33897492

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 43, 58, 86, 87, 116, 129, 172, 174, 258, 261, 348, 387, 449, 516, 522, 774, 898, 1044, 1247, 1347, 1548, 1796, 2494, 2694, 3741, 4041, 4988, 5388, 7482, 8082, 11223, 13021, 14964, 16164, 19307, 22446, 26042, 38614, 39063, 44892, 52084, 57921, 77228, 78126, 115842, 117189, 156252, 173763, 231684, 234378, 347526, 468756, 559903, 695052, 1119806, 1679709, 2239612, 3359418, 5039127, 6718836, 10078254, 20156508]

約数ペア:

[(1, 20156508), (2, 10078254), (3, 6718836), (4, 5039127), (6, 3359418), (9, 2239612), (12, 1679709), (18, 1119806), (29, 695052), (36, 559903), (43, 468756), (58, 347526), (86, 234378), (87, 231684), (116, 173763), (129, 156252), (172, 117189), (174, 115842), (258, 78126), (261, 77228), (348, 57921), (387, 52084), (449, 44892), (516, 39063), (522, 38614), (774, 26042), (898, 22446), (1044, 19307), (1247, 16164), (1347, 14964), (1548, 13021), (1796, 11223), (2494, 8082), (2694, 7482), (3741, 5388), (4041, 4988)]