21200979

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{433}}^1\times {\mathrm{859}}^1$

素因数の和:1314

約数の個数: 16

約数和(自身を含む): 29859200

約数和(自身を除く): 8658221

約数列:

[1, 3, 19, 57, 433, 859, 1299, 2577, 8227, 16321, 24681, 48963, 371947, 1115841, 7066993, 21200979]

約数ペア:

[(1, 21200979), (3, 7066993), (19, 1115841), (57, 371947), (433, 48963), (859, 24681), (1299, 16321), (2577, 8227)]