21906049

素因数分解:

${\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{1597}}^1$

素因数の和:1680

約数の個数: 16

約数和(自身を含む): 25312320

約数和(自身を除く): 3406271

約数列:

[1, 11, 29, 43, 319, 473, 1247, 1597, 13717, 17567, 46313, 68671, 509443, 755381, 1991459, 21906049]

約数ペア:

[(1, 21906049), (11, 1991459), (29, 755381), (43, 509443), (319, 68671), (473, 46313), (1247, 17567), (1597, 13717)]