21807912

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{271}}^1\times {\mathrm{479}}^1$

素因数の和:766

約数の個数: 64

約数和(自身を含む): 62668800

約数和(自身を除く): 40860888

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 271, 479, 542, 813, 958, 1084, 1437, 1626, 1897, 1916, 2168, 2874, 3252, 3353, 3794, 3832, 5691, 5748, 6504, 6706, 7588, 10059, 11382, 11496, 13412, 15176, 20118, 22764, 26824, 40236, 45528, 80472, 129809, 259618, 389427, 519236, 778854, 908663, 1038472, 1557708, 1817326, 2725989, 3115416, 3634652, 5451978, 7269304, 10903956, 21807912]

約数ペア:

[(1, 21807912), (2, 10903956), (3, 7269304), (4, 5451978), (6, 3634652), (7, 3115416), (8, 2725989), (12, 1817326), (14, 1557708), (21, 1038472), (24, 908663), (28, 778854), (42, 519236), (56, 389427), (84, 259618), (168, 129809), (271, 80472), (479, 45528), (542, 40236), (813, 26824), (958, 22764), (1084, 20118), (1437, 15176), (1626, 13412), (1897, 11496), (1916, 11382), (2168, 10059), (2874, 7588), (3252, 6706), (3353, 6504), (3794, 5748), (3832, 5691)]