199891887

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{227}}^1\times {\mathrm{337}}^1$

素因数の和:647

約数の個数: 32

約数和(自身を含む): 293459712

約数和(自身を除く): 93567825

約数列:

[1, 3, 13, 39, 67, 201, 227, 337, 681, 871, 1011, 2613, 2951, 4381, 8853, 13143, 15209, 22579, 45627, 67737, 76499, 197717, 229497, 293527, 593151, 880581, 994487, 2983461, 5125433, 15376299, 66630629, 199891887]

約数ペア:

[(1, 199891887), (3, 66630629), (13, 15376299), (39, 5125433), (67, 2983461), (201, 994487), (227, 880581), (337, 593151), (681, 293527), (871, 229497), (1011, 197717), (2613, 76499), (2951, 67737), (4381, 45627), (8853, 22579), (13143, 15209)]