19998610

素因数分解:

$2^1\times 5^1\times {\mathrm{509}}^1\times {\mathrm{3929}}^1$

素因数の和:4445

約数の個数: 16

約数和(自身を含む): 36077400

約数和(自身を除く): 16078790

約数列:

[1, 2, 5, 10, 509, 1018, 2545, 3929, 5090, 7858, 19645, 39290, 1999861, 3999722, 9999305, 19998610]

約数ペア:

[(1, 19998610), (2, 9999305), (5, 3999722), (10, 1999861), (509, 39290), (1018, 19645), (2545, 7858), (3929, 5090)]