8279980

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4099}}^1$

素因数の和:4209

約数の個数: 24

約数和(自身を含む): 17564400

約数和(自身を除く): 9284420

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 4099, 8198, 16396, 20495, 40990, 81980, 413999, 827998, 1655996, 2069995, 4139990, 8279980]

約数ペア:

[(1, 8279980), (2, 4139990), (4, 2069995), (5, 1655996), (10, 827998), (20, 413999), (101, 81980), (202, 40990), (404, 20495), (505, 16396), (1010, 8198), (2020, 4099)]