809322820

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{371249}}^1$

素因数の和:371367

約数の個数: 24

約数和(自身を含む): 1715175000

約数和(自身を除く): 905852180

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 371249, 742498, 1484996, 1856245, 3712490, 7424980, 40466141, 80932282, 161864564, 202330705, 404661410, 809322820]

約数ペア:

[(1, 809322820), (2, 404661410), (4, 202330705), (5, 161864564), (10, 80932282), (20, 40466141), (109, 7424980), (218, 3712490), (436, 1856245), (545, 1484996), (1090, 742498), (2180, 371249)]