18208510

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{499}}^1$

素因数の和:636

約数の個数: 32

約数和(自身を含む): 34020000

約数和(自身を除く): 15811490

約数列:

[1, 2, 5, 10, 41, 82, 89, 178, 205, 410, 445, 499, 890, 998, 2495, 3649, 4990, 7298, 18245, 20459, 36490, 40918, 44411, 88822, 102295, 204590, 222055, 444110, 1820851, 3641702, 9104255, 18208510]

約数ペア:

[(1, 18208510), (2, 9104255), (5, 3641702), (10, 1820851), (41, 444110), (82, 222055), (89, 204590), (178, 102295), (205, 88822), (410, 44411), (445, 40918), (499, 36490), (890, 20459), (998, 18245), (2495, 7298), (3649, 4990)]