21277984

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7307}}^1$

素因数の和:7337

約数の個数: 48

約数和(自身を含む): 51565248

約数和(自身を除く): 30287264

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 91, 104, 112, 182, 208, 224, 364, 416, 728, 1456, 2912, 7307, 14614, 29228, 51149, 58456, 94991, 102298, 116912, 189982, 204596, 233824, 379964, 409192, 664937, 759928, 818384, 1329874, 1519856, 1636768, 2659748, 3039712, 5319496, 10638992, 21277984]

約数ペア:

[(1, 21277984), (2, 10638992), (4, 5319496), (7, 3039712), (8, 2659748), (13, 1636768), (14, 1519856), (16, 1329874), (26, 818384), (28, 759928), (32, 664937), (52, 409192), (56, 379964), (91, 233824), (104, 204596), (112, 189982), (182, 116912), (208, 102298), (224, 94991), (364, 58456), (416, 51149), (728, 29228), (1456, 14614), (2912, 7307)]