21237782

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{2837}}^1$

素因数の和:3055

約数の個数: 16

約数和(自身を含む): 33715440

約数和(自身を除く): 12477658

約数列:

[1, 2, 19, 38, 197, 394, 2837, 3743, 5674, 7486, 53903, 107806, 558889, 1117778, 10618891, 21237782]

約数ペア:

[(1, 21237782), (2, 10618891), (19, 1117778), (38, 558889), (197, 107806), (394, 53903), (2837, 7486), (3743, 5674)]