21819812

素因数分解:

$2^2\times 7^1\times {\mathrm{509}}^1\times {\mathrm{1531}}^1$

素因数の和:2051

約数の個数: 24

約数和(自身を含む): 43753920

約数和(自身を除く): 21934108

約数列:

[1, 2, 4, 7, 14, 28, 509, 1018, 1531, 2036, 3062, 3563, 6124, 7126, 10717, 14252, 21434, 42868, 779279, 1558558, 3117116, 5454953, 10909906, 21819812]

約数ペア:

[(1, 21819812), (2, 10909906), (4, 5454953), (7, 3117116), (14, 1558558), (28, 779279), (509, 42868), (1018, 21434), (1531, 14252), (2036, 10717), (3062, 7126), (3563, 6124)]