19785340

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{2467}}^1$

素因数の和:2877

約数の個数: 24

約数和(自身を含む): 41669712

約数和(自身を除く): 21884372

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 2467, 4010, 4934, 8020, 9868, 12335, 24670, 49340, 989267, 1978534, 3957068, 4946335, 9892670, 19785340]

約数ペア:

[(1, 19785340), (2, 9892670), (4, 4946335), (5, 3957068), (10, 1978534), (20, 989267), (401, 49340), (802, 24670), (1604, 12335), (2005, 9868), (2467, 8020), (4010, 4934)]