21242564

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{24473}}^1$

素因数の和:24515

約数の個数: 24

約数和(自身を含む): 43857408

約数和(自身を除く): 22614844

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868, 24473, 48946, 97892, 171311, 342622, 685244, 758663, 1517326, 3034652, 5310641, 10621282, 21242564]

約数ペア:

[(1, 21242564), (2, 10621282), (4, 5310641), (7, 3034652), (14, 1517326), (28, 758663), (31, 685244), (62, 342622), (124, 171311), (217, 97892), (434, 48946), (868, 24473)]