81129776

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{55721}}^1$

素因数の和:55749

約数の個数: 40

約数和(自身を含む): 193466784

約数和(自身を除く): 112337008

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 55721, 111442, 222884, 390047, 445768, 724373, 780094, 891536, 1448746, 1560188, 2897492, 3120376, 5070611, 5794984, 6240752, 10141222, 11589968, 20282444, 40564888, 81129776]

約数ペア:

[(1, 81129776), (2, 40564888), (4, 20282444), (7, 11589968), (8, 10141222), (13, 6240752), (14, 5794984), (16, 5070611), (26, 3120376), (28, 2897492), (52, 1560188), (56, 1448746), (91, 891536), (104, 780094), (112, 724373), (182, 445768), (208, 390047), (364, 222884), (728, 111442), (1456, 55721)]