21092080

素因数分解:

$2^4\times 5^1\times {\mathrm{263651}}^1$

素因数の和:263664

約数の個数: 20

約数和(自身を含む): 49039272

約数和(自身を除く): 27947192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 263651, 527302, 1054604, 1318255, 2109208, 2636510, 4218416, 5273020, 10546040, 21092080]

約数ペア:

[(1, 21092080), (2, 10546040), (4, 5273020), (5, 4218416), (8, 2636510), (10, 2109208), (16, 1318255), (20, 1054604), (40, 527302), (80, 263651)]