21284845

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{449}}^1\times {\mathrm{499}}^1$

素因数の和:972

約数の個数: 16

約数和(自身を含む): 27000000

約数和(自身を除く): 5715155

約数列:

[1, 5, 19, 95, 449, 499, 2245, 2495, 8531, 9481, 42655, 47405, 224051, 1120255, 4256969, 21284845]

約数ペア:

[(1, 21284845), (5, 4256969), (19, 1120255), (95, 224051), (449, 47405), (499, 42655), (2245, 9481), (2495, 8531)]