20997656

素因数分解:

$2^3\times {\mathrm{251}}^1\times {\mathrm{10457}}^1$

素因数の和:10714

約数の個数: 16

約数和(自身を含む): 39531240

約数和(自身を除く): 18533584

約数列:

[1, 2, 4, 8, 251, 502, 1004, 2008, 10457, 20914, 41828, 83656, 2624707, 5249414, 10498828, 20997656]

約数ペア:

[(1, 20997656), (2, 10498828), (4, 5249414), (8, 2624707), (251, 83656), (502, 41828), (1004, 20914), (2008, 10457)]