19813060

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{7127}}^1$

素因数の和:7275

約数の個数: 24

約数和(自身を含む): 41912640

約数和(自身を除く): 22099580

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 7127, 14254, 28508, 35635, 71270, 142540, 990653, 1981306, 3962612, 4953265, 9906530, 19813060]

約数ペア:

[(1, 19813060), (2, 9906530), (4, 4953265), (5, 3962612), (10, 1981306), (20, 990653), (139, 142540), (278, 71270), (556, 35635), (695, 28508), (1390, 14254), (2780, 7127)]