1294820

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{641}}^1$

素因数の和:751

約数の個数: 24

約数和(自身を含む): 2750328

約数和(自身を除く): 1455508

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 641, 1010, 1282, 2020, 2564, 3205, 6410, 12820, 64741, 129482, 258964, 323705, 647410, 1294820]

約数ペア:

[(1, 1294820), (2, 647410), (4, 323705), (5, 258964), (10, 129482), (20, 64741), (101, 12820), (202, 6410), (404, 3205), (505, 2564), (641, 2020), (1010, 1282)]