21288636

素因数分解:

$2^2\times 3^3\times {\mathrm{197117}}^1$

素因数の和:197130

約数の個数: 24

約数和(自身を含む): 55193040

約数和(自身を除く): 33904404

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 197117, 394234, 591351, 788468, 1182702, 1774053, 2365404, 3548106, 5322159, 7096212, 10644318, 21288636]

約数ペア:

[(1, 21288636), (2, 10644318), (3, 7096212), (4, 5322159), (6, 3548106), (9, 2365404), (12, 1774053), (18, 1182702), (27, 788468), (36, 591351), (54, 394234), (108, 197117)]