28120262

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{239}}^1\times {\mathrm{661}}^1$

素因数の和:991

約数の個数: 16

約数和(自身を含む): 42897600

約数和(自身を除く): 14777338

約数列:

[1, 2, 89, 178, 239, 478, 661, 1322, 21271, 42542, 58829, 117658, 157979, 315958, 14060131, 28120262]

約数ペア:

[(1, 28120262), (2, 14060131), (89, 315958), (178, 157979), (239, 117658), (478, 58829), (661, 42542), (1322, 21271)]