409180

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{499}}^1$

素因数の和:549

約数の個数: 24

約数和(自身を含む): 882000

約数和(自身を除く): 472820

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 499, 820, 998, 1996, 2495, 4990, 9980, 20459, 40918, 81836, 102295, 204590, 409180]

約数ペア:

[(1, 409180), (2, 204590), (4, 102295), (5, 81836), (10, 40918), (20, 20459), (41, 9980), (82, 4990), (164, 2495), (205, 1996), (410, 998), (499, 820)]