21297976

素因数分解:

$2^3\times 7^1\times {\mathrm{277}}^1\times {\mathrm{1373}}^1$

素因数の和:1663

約数の個数: 32

約数和(自身を含む): 45836640

約数和(自身を除く): 24538664

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 277, 554, 1108, 1373, 1939, 2216, 2746, 3878, 5492, 7756, 9611, 10984, 15512, 19222, 38444, 76888, 380321, 760642, 1521284, 2662247, 3042568, 5324494, 10648988, 21297976]

約数ペア:

[(1, 21297976), (2, 10648988), (4, 5324494), (7, 3042568), (8, 2662247), (14, 1521284), (28, 760642), (56, 380321), (277, 76888), (554, 38444), (1108, 19222), (1373, 15512), (1939, 10984), (2216, 9611), (2746, 7756), (3878, 5492)]