21492620

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{9859}}^1$

素因数の和:9977

約数の個数: 24

約数和(自身を含む): 45553200

約数和(自身を除く): 24060580

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 9859, 19718, 39436, 49295, 98590, 197180, 1074631, 2149262, 4298524, 5373155, 10746310, 21492620]

約数ペア:

[(1, 21492620), (2, 10746310), (4, 5373155), (5, 4298524), (10, 2149262), (20, 1074631), (109, 197180), (218, 98590), (436, 49295), (545, 39436), (1090, 19718), (2180, 9859)]