21180754

素因数分解:

$2^1\times 7^1\times {\mathrm{89}}^2\times {\mathrm{191}}^1$

素因数の和:378

約数の個数: 24

約数和(自身を含む): 36914688

約数和(自身を除く): 15733934

約数列:

[1, 2, 7, 14, 89, 178, 191, 382, 623, 1246, 1337, 2674, 7921, 15842, 16999, 33998, 55447, 110894, 118993, 237986, 1512911, 3025822, 10590377, 21180754]

約数ペア:

[(1, 21180754), (2, 10590377), (7, 3025822), (14, 1512911), (89, 237986), (178, 118993), (191, 110894), (382, 55447), (623, 33998), (1246, 16999), (1337, 15842), (2674, 7921)]