19806004

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{263}}^1\times {\mathrm{281}}^1$

素因数の和:615

約数の個数: 24

約数和(自身を含む): 35437248

約数和(自身を除く): 15631244

約数列:

[1, 2, 4, 67, 134, 263, 268, 281, 526, 562, 1052, 1124, 17621, 18827, 35242, 37654, 70484, 73903, 75308, 147806, 295612, 4951501, 9903002, 19806004]

約数ペア:

[(1, 19806004), (2, 9903002), (4, 4951501), (67, 295612), (134, 147806), (263, 75308), (268, 73903), (281, 70484), (526, 37654), (562, 35242), (1052, 18827), (1124, 17621)]