19901872

素因数分解:

$2^4\times {\mathrm{337}}^1\times {\mathrm{3691}}^1$

素因数の和:4036

約数の個数: 20

約数和(自身を含む): 38684776

約数和(自身を除く): 18782904

約数列:

[1, 2, 4, 8, 16, 337, 674, 1348, 2696, 3691, 5392, 7382, 14764, 29528, 59056, 1243867, 2487734, 4975468, 9950936, 19901872]

約数ペア:

[(1, 19901872), (2, 9950936), (4, 4975468), (8, 2487734), (16, 1243867), (337, 59056), (674, 29528), (1348, 14764), (2696, 7382), (3691, 5392)]