21458032

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{31189}}^1$

素因数の和:31240

約数の個数: 20

約数和(自身を含む): 42543160

約数和(自身を除く): 21085128

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 31189, 62378, 124756, 249512, 499024, 1341127, 2682254, 5364508, 10729016, 21458032]

約数ペア:

[(1, 21458032), (2, 10729016), (4, 5364508), (8, 2682254), (16, 1341127), (43, 499024), (86, 249512), (172, 124756), (344, 62378), (688, 31189)]