21212912

素因数分解:

$2^4\times 7^1\times {\mathrm{189401}}^1$

素因数の和:189416

約数の個数: 20

約数和(自身を含む): 46971696

約数和(自身を除く): 25758784

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 189401, 378802, 757604, 1325807, 1515208, 2651614, 3030416, 5303228, 10606456, 21212912]

約数ペア:

[(1, 21212912), (2, 10606456), (4, 5303228), (7, 3030416), (8, 2651614), (14, 1515208), (16, 1325807), (28, 757604), (56, 378802), (112, 189401)]