20809964

素因数分解:

$2^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{10181}}^1$

素因数の和:10265

約数の個数: 24

約数和(自身を含む): 42194208

約数和(自身を除く): 21384244

約数列:

[1, 2, 4, 7, 14, 28, 73, 146, 292, 511, 1022, 2044, 10181, 20362, 40724, 71267, 142534, 285068, 743213, 1486426, 2972852, 5202491, 10404982, 20809964]

約数ペア:

[(1, 20809964), (2, 10404982), (4, 5202491), (7, 2972852), (14, 1486426), (28, 743213), (73, 285068), (146, 142534), (292, 71267), (511, 40724), (1022, 20362), (2044, 10181)]