81198208

素因数分解:

$2^7\times 7^1\times {\mathrm{13}}^1\times {\mathrm{6971}}^1$

素因数の和:7005

約数の個数: 64

約数和(自身を含む): 199120320

約数和(自身を除く): 117922112

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 64, 91, 104, 112, 128, 182, 208, 224, 364, 416, 448, 728, 832, 896, 1456, 1664, 2912, 5824, 6971, 11648, 13942, 27884, 48797, 55768, 90623, 97594, 111536, 181246, 195188, 223072, 362492, 390376, 446144, 634361, 724984, 780752, 892288, 1268722, 1449968, 1561504, 2537444, 2899936, 3123008, 5074888, 5799872, 6246016, 10149776, 11599744, 20299552, 40599104, 81198208]

約数ペア:

[(1, 81198208), (2, 40599104), (4, 20299552), (7, 11599744), (8, 10149776), (13, 6246016), (14, 5799872), (16, 5074888), (26, 3123008), (28, 2899936), (32, 2537444), (52, 1561504), (56, 1449968), (64, 1268722), (91, 892288), (104, 780752), (112, 724984), (128, 634361), (182, 446144), (208, 390376), (224, 362492), (364, 223072), (416, 195188), (448, 181246), (728, 111536), (832, 97594), (896, 90623), (1456, 55768), (1664, 48797), (2912, 27884), (5824, 13942), (6971, 11648)]