21521868

素因数分解:

$2^2\times 3^1\times {\mathrm{163}}^1\times {\mathrm{11003}}^1$

素因数の和:11173

約数の個数: 24

約数和(自身を含む): 50530368

約数和(自身を除く): 29008500

約数列:

[1, 2, 3, 4, 6, 12, 163, 326, 489, 652, 978, 1956, 11003, 22006, 33009, 44012, 66018, 132036, 1793489, 3586978, 5380467, 7173956, 10760934, 21521868]

約数ペア:

[(1, 21521868), (2, 10760934), (3, 7173956), (4, 5380467), (6, 3586978), (12, 1793489), (163, 132036), (326, 66018), (489, 44012), (652, 33009), (978, 22006), (1956, 11003)]