19636520

素因数分解:

$2^3\times 5^1\times {\mathrm{490913}}^1$

素因数の和:490924

約数の個数: 16

約数和(自身を含む): 44182260

約数和(自身を除く): 24545740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 490913, 981826, 1963652, 2454565, 3927304, 4909130, 9818260, 19636520]

約数ペア:

[(1, 19636520), (2, 9818260), (4, 4909130), (5, 3927304), (8, 2454565), (10, 1963652), (20, 981826), (40, 490913)]