21896091

素因数分解:

$3^2\times 7^3\times {\mathrm{41}}^1\times {\mathrm{173}}^1$

素因数の和:241

約数の個数: 48

約数和(自身を含む): 38001600

約数和(自身を除く): 16105509

約数列:

[1, 3, 7, 9, 21, 41, 49, 63, 123, 147, 173, 287, 343, 369, 441, 519, 861, 1029, 1211, 1557, 2009, 2583, 3087, 3633, 6027, 7093, 8477, 10899, 14063, 18081, 21279, 25431, 42189, 49651, 59339, 63837, 76293, 126567, 148953, 178017, 347557, 446859, 534051, 1042671, 2432899, 3128013, 7298697, 21896091]

約数ペア:

[(1, 21896091), (3, 7298697), (7, 3128013), (9, 2432899), (21, 1042671), (41, 534051), (49, 446859), (63, 347557), (123, 178017), (147, 148953), (173, 126567), (287, 76293), (343, 63837), (369, 59339), (441, 49651), (519, 42189), (861, 25431), (1029, 21279), (1211, 18081), (1557, 14063), (2009, 10899), (2583, 8477), (3087, 7093), (3633, 6027)]