20219804

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{10687}}^1$

素因数の和:10745

約数の個数: 24

約数和(自身を含む): 39502848

約数和(自身を除く): 19283044

約数列:

[1, 2, 4, 11, 22, 43, 44, 86, 172, 473, 946, 1892, 10687, 21374, 42748, 117557, 235114, 459541, 470228, 919082, 1838164, 5054951, 10109902, 20219804]

約数ペア:

[(1, 20219804), (2, 10109902), (4, 5054951), (11, 1838164), (22, 919082), (43, 470228), (44, 459541), (86, 235114), (172, 117557), (473, 42748), (946, 21374), (1892, 10687)]