21342448

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{463}}^1$

素因数の和:581

約数の個数: 40

約数和(自身を含む): 43036928

約数和(自身を除く): 21694480

約数列:

[1, 2, 4, 8, 16, 43, 67, 86, 134, 172, 268, 344, 463, 536, 688, 926, 1072, 1852, 2881, 3704, 5762, 7408, 11524, 19909, 23048, 31021, 39818, 46096, 62042, 79636, 124084, 159272, 248168, 318544, 496336, 1333903, 2667806, 5335612, 10671224, 21342448]

約数ペア:

[(1, 21342448), (2, 10671224), (4, 5335612), (8, 2667806), (16, 1333903), (43, 496336), (67, 318544), (86, 248168), (134, 159272), (172, 124084), (268, 79636), (344, 62042), (463, 46096), (536, 39818), (688, 31021), (926, 23048), (1072, 19909), (1852, 11524), (2881, 7408), (3704, 5762)]