21497936

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{31247}}^1$

素因数の和:31298

約数の個数: 20

約数和(自身を含む): 42622272

約数和(自身を除く): 21124336

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 31247, 62494, 124988, 249976, 499952, 1343621, 2687242, 5374484, 10748968, 21497936]

約数ペア:

[(1, 21497936), (2, 10748968), (4, 5374484), (8, 2687242), (16, 1343621), (43, 499952), (86, 249976), (172, 124988), (344, 62494), (688, 31247)]