21297808

素因数分解:

$2^4\times 7^1\times {\mathrm{190159}}^1$

素因数の和:190174

約数の個数: 20

約数和(自身を含む): 47159680

約数和(自身を除く): 25861872

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 190159, 380318, 760636, 1331113, 1521272, 2662226, 3042544, 5324452, 10648904, 21297808]

約数ペア:

[(1, 21297808), (2, 10648904), (4, 5324452), (7, 3042544), (8, 2662226), (14, 1521272), (16, 1331113), (28, 760636), (56, 380318), (112, 190159)]