2005388540

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{919903}}^1$

素因数の和:920021

約数の個数: 24

約数和(自身を含む): 4249956480

約数和(自身を除く): 2244567940

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 919903, 1839806, 3679612, 4599515, 9199030, 18398060, 100269427, 200538854, 401077708, 501347135, 1002694270, 2005388540]

約数ペア:

[(1, 2005388540), (2, 1002694270), (4, 501347135), (5, 401077708), (10, 200538854), (20, 100269427), (109, 18398060), (218, 9199030), (436, 4599515), (545, 3679612), (1090, 1839806), (2180, 919903)]