21000391718

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{661}}^1\times {\mathrm{299723}}^1$

素因数の和:300439

約数の個数: 16

約数和(自身を含む): 32143600656

約数和(自身を除く): 11143208938

約数列:

[1, 2, 53, 106, 661, 1322, 35033, 70066, 299723, 599446, 15885319, 31770638, 198116903, 396233806, 10500195859, 21000391718]

約数ペア:

[(1, 21000391718), (2, 10500195859), (53, 396233806), (106, 198116903), (661, 31770638), (1322, 15885319), (35033, 599446), (70066, 299723)]